7-8(1-3s)=21

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Solution for 7-8(1-3s)=21 equation:


Simplifying
7 + -8(1 + -3s) = 21
7 + (1 * -8 + -3s * -8) = 21
7 + (-8 + 24s) = 21

Combine like terms: 7 + -8 = -1
-1 + 24s = 21

Solving
-1 + 24s = 21

Solving for variable 's'.

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

Add '1' to each side of the equation.
-1 + 1 + 24s = 21 + 1

Combine like terms: -1 + 1 = 0
0 + 24s = 21 + 1
24s = 21 + 1

Combine like terms: 21 + 1 = 22
24s = 22

Divide each side by '24'.
s = 0.9166666667

Simplifying
s = 0.9166666667

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