(7-s)(-3)=

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Solution for (7-s)(-3)= equation:


Simplifying
(7 + -1s)(-3) = 0

Reorder the terms for easier multiplication:
-3(7 + -1s) = 0
(7 * -3 + -1s * -3) = 0
(-21 + 3s) = 0

Solving
-21 + 3s = 0

Solving for variable 's'.

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

Add '21' to each side of the equation.
-21 + 21 + 3s = 0 + 21

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

Combine like terms: 0 + 21 = 21
3s = 21

Divide each side by '3'.
s = 7

Simplifying
s = 7

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