Question

Which equations have the same value of x as Three-fifths (30 x minus 15) = 72? Select three options. 18 x minus 15 = 72 50 x minus 25 = 72 18 x minus 9 = 72 3 (6 x minus 3) = 72 x = 4.5

Answer 1

Answer:

letter D is the right answer just did on the test

Step-by-step explanation:

Answer 2

We have been given an equation $\frac{3}{5}(30x-15)=72$. We are asked to choose the equations that have same value of x.    

Let us solve our given problem.  

$\frac{3}{5}\cdot 30x-\frac{3}{5}\cdot 15=72$

$3\cdot 6x-3\cdot 3=72$

$18x-9=72$

Therefore, option C is the correct choice.

Now we will factor out 3 from above equation as:

$3\cdot 6x-3\cdot 3=72$

$3(6x-3)=72$

Therefore, option D is correct choice as well.

Let us solve for x.

$\frac{3(6x-3)}{3}=\frac{72}{3}$

$6x-3=24$

$6x-3+3=24+3$

$6x=27$

$\frac{6x}{6}=\frac{27}{6}$

$x=4.5$

Therefore, last option is correct as well.