Question

Which equations have the same value of x as 3/5 (30x - 15x) = 72? Check all that apply.
18x-15=72
50x-25=72
18x-9=72
3(6x-3)=72
18x=81
18x=6.3
x=3.5
x=4.5

Answer 1

3/5(30x - 15) = 72
18x - 9 = 72 <==== this is one
3(6x - 3) = 72 <== this is one
18x = 81 <== this is one
x = 81/18
x = 4.5 <== this is one

Answer 2

The equation  3/5 (30x - 15x) = 72 is equivalent to the expression 18x-9=72, and 3(6x-3)=72 expression third, and expression fourth is correct.

What is a linear equation?

It is defined as the relation between two variables if we plot the graph of the linear equation we will get a straight line.

If in the linear equation one variable is present then the equation is known as the linear equation in one variable.

We have a linear equation:

$\rm \frac{3}{5} (30x-15x) = 72$

Using distributive property:

$\rm (18x-9x) = 72$

9x = 72

x = 8

Thus, the equation  3/5 (30x - 15x) = 72 is equivalent to the expression 18x-9=72, and 3(6x-3)=72 expression third, and expression fourth is correct.

Learn more about the linear equation here:

brainly.com/question/11897796

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