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

Option 3 ) 18x - 9 = 72

Explanation:

Algebraic equations:

`\sf (3)/(5)(30x - 15) = 72\\\\\\`

Multiply each term of (30x - 15) by 3/5,

`\sf (3)/(5)*30x - (3)/(5)*15=72\\\\\\3*6x - 3*3 = 72\\\\18x - 9 = 72`

The given equation is same as 18x - 9 = 72