4s+7=3s+21

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Solution for 4s+7=3s+21 equation:


Simplifying
4s + 7 = 3s + 21

Reorder the terms:
7 + 4s = 3s + 21

Reorder the terms:
7 + 4s = 21 + 3s

Solving
7 + 4s = 21 + 3s

Solving for variable 's'.

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

Add '-3s' to each side of the equation.
7 + 4s + -3s = 21 + 3s + -3s

Combine like terms: 4s + -3s = 1s
7 + 1s = 21 + 3s + -3s

Combine like terms: 3s + -3s = 0
7 + 1s = 21 + 0
7 + 1s = 21

Add '-7' to each side of the equation.
7 + -7 + 1s = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 1s = 21 + -7
1s = 21 + -7

Combine like terms: 21 + -7 = 14
1s = 14

Divide each side by '1'.
s = 14

Simplifying
s = 14

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