18+3(15+y)-7=72

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Solution for 18+3(15+y)-7=72 equation:


Simplifying
18 + 3(15 + y) + -7 = 72
18 + (15 * 3 + y * 3) + -7 = 72
18 + (45 + 3y) + -7 = 72

Reorder the terms:
18 + 45 + -7 + 3y = 72

Combine like terms: 18 + 45 = 63
63 + -7 + 3y = 72

Combine like terms: 63 + -7 = 56
56 + 3y = 72

Solving
56 + 3y = 72

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-56' to each side of the equation.
56 + -56 + 3y = 72 + -56

Combine like terms: 56 + -56 = 0
0 + 3y = 72 + -56
3y = 72 + -56

Combine like terms: 72 + -56 = 16
3y = 16

Divide each side by '3'.
y = 5.333333333

Simplifying
y = 5.333333333

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