7+3(7-3x)=100

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Solution for 7+3(7-3x)=100 equation:


Simplifying
7 + 3(7 + -3x) = 100
7 + (7 * 3 + -3x * 3) = 100
7 + (21 + -9x) = 100

Combine like terms: 7 + 21 = 28
28 + -9x = 100

Solving
28 + -9x = 100

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + -9x = 100 + -28

Combine like terms: 28 + -28 = 0
0 + -9x = 100 + -28
-9x = 100 + -28

Combine like terms: 100 + -28 = 72
-9x = 72

Divide each side by '-9'.
x = -8

Simplifying
x = -8

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