1. Brianna's thinking is incorrect because of course, when x is 0, the expression will equal whatever value isn't an x term. To find equivalent expression, you actually need to find which expressions have the same amount of x terms and the same value.
2. Expressions A and C are equivalent.
3. Expression A can be simplified, as you can do 9x - 3x = 6x, so your final expression would be 6x - 4. Expression C can also be simplified with 5x + x = 6x, which can then also be written as 6x - 4. This means both expressions have the same amount of x terms, and the same value, so they are equivalent.
1. Brianna's thinking is incorrect because of course, when x is 0, the expression will equal whatever value isn't an x term. To find equivalent expression, you actually need to find which expressions have the same amount of x terms and the same value.
2. Expressions A and C are equivalent.
3. Expression A can be simplified, as you can do 9x - 3x = 6x, so your final expression would be 6x - 4. Expression C can also be simplified with 5x + x = 6x, which can then also be written as 6x - 4. This means both expressions have the same amount of x terms, and the same value, so they are equivalent.
I hope this helps!
The two fractions equivalent to eachother are 2/3 and 6/9
Step-by-step explanation:
These fractions are equivalent because 6/9 can be reduced into 2/3. Also 6 is a multiple of 2 and 9 is a multiple of 3.
Expression A and C are correct because 9x - 3x = 6x and 5x + x = 6x, then -4
A and C are equivalent.
Step-by-step explanation:
When you simplify the expression, you find that only A and C simplify to make 6x-4
2/3 and 6/9
Step-by-step explanation:
you can just ÷ the fractions to turn them to decimals
2÷3=0.6666666667 and 6÷9=0.6666666667 they are the same so they are equivalent.
Briana's thinking is incorrect because the numbers are different when you substitute x with numbers other than 0.
the two equations that are equivalent to each other are,
5x+x−4 and 9x-3x-4
Step-by-step explanation:
Expression A: 9x−3x−4
Expression B: 12x−4
Expression C: 5x+x−4
First I will substitute x for each of the equations.
9x-3x-4
when x equals: , then y equals:
1 = 9(1)-3(1)-4= 2
2 = 9(2)-3(2)-4=8
3 = 9(3)-3(3)-4= 14
Now for 12x-4
when x equals: , then y equals:
1 = 12(1)-4= 8
2 = 12(2)-4= 20
3 = 12(3)-4= 32
And for the final equation:
5x+x−4
when x equals: , then y equals:
1 = 5(1)+(1)−4= 2
2 = 5(2)+(2)−4 = 8
3 = 5(3)+(3)−4=14
Based on this you can now see that the two equations that are equal are:
5x+x−4 and 9x-3x-4
~CaityConcerto
2/3 and 6/9
Step-by-step explanation
If the numbers are divisible by the corresponding denominator and numerators then the fractions will be equivalent.
Expressions A and C are equivalent.
Step-by-step explanation:
Expression A: 9x−3x−4 Combine like terms 6x -4
Expression B: 12x−4 There are no terms to combine 12x-4
Expression C: 5x+x−4 Combine like terms 6x -4
Brianna only looked at one particular value for x. She must look at all values for x.
9x-3x and 5x+x
Step-by-step explanation:
9x-3x -4 simplified =6x -4
5x+x -4 simplified =6x -4
So, 9x-3x=6x-4