(8x+21)+(3x+3)=90

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Solution for (8x+21)+(3x+3)=90 equation:


Simplifying
(8x + 21) + (3x + 3) = 90

Reorder the terms:
(21 + 8x) + (3x + 3) = 90

Remove parenthesis around (21 + 8x)
21 + 8x + (3x + 3) = 90

Reorder the terms:
21 + 8x + (3 + 3x) = 90

Remove parenthesis around (3 + 3x)
21 + 8x + 3 + 3x = 90

Reorder the terms:
21 + 3 + 8x + 3x = 90

Combine like terms: 21 + 3 = 24
24 + 8x + 3x = 90

Combine like terms: 8x + 3x = 11x
24 + 11x = 90

Solving
24 + 11x = 90

Solving for variable 'x'.

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

Add '-24' to each side of the equation.
24 + -24 + 11x = 90 + -24

Combine like terms: 24 + -24 = 0
0 + 11x = 90 + -24
11x = 90 + -24

Combine like terms: 90 + -24 = 66
11x = 66

Divide each side by '11'.
x = 6

Simplifying
x = 6

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