20s+19s-15=8(8s+20)

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Solution for 20s+19s-15=8(8s+20) equation:


Simplifying
20s + 19s + -15 = 8(8s + 20)

Reorder the terms:
-15 + 20s + 19s = 8(8s + 20)

Combine like terms: 20s + 19s = 39s
-15 + 39s = 8(8s + 20)

Reorder the terms:
-15 + 39s = 8(20 + 8s)
-15 + 39s = (20 * 8 + 8s * 8)
-15 + 39s = (160 + 64s)

Solving
-15 + 39s = 160 + 64s

Solving for variable 's'.

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

Add '-64s' to each side of the equation.
-15 + 39s + -64s = 160 + 64s + -64s

Combine like terms: 39s + -64s = -25s
-15 + -25s = 160 + 64s + -64s

Combine like terms: 64s + -64s = 0
-15 + -25s = 160 + 0
-15 + -25s = 160

Add '15' to each side of the equation.
-15 + 15 + -25s = 160 + 15

Combine like terms: -15 + 15 = 0
0 + -25s = 160 + 15
-25s = 160 + 15

Combine like terms: 160 + 15 = 175
-25s = 175

Divide each side by '-25'.
s = -7

Simplifying
s = -7

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