(15x+7)+(x+3)=90

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Solution for (15x+7)+(x+3)=90 equation:


Simplifying
(15x + 7) + (x + 3) = 90

Reorder the terms:
(7 + 15x) + (x + 3) = 90

Remove parenthesis around (7 + 15x)
7 + 15x + (x + 3) = 90

Reorder the terms:
7 + 15x + (3 + x) = 90

Remove parenthesis around (3 + x)
7 + 15x + 3 + x = 90

Reorder the terms:
7 + 3 + 15x + x = 90

Combine like terms: 7 + 3 = 10
10 + 15x + x = 90

Combine like terms: 15x + x = 16x
10 + 16x = 90

Solving
10 + 16x = 90

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 16x = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 16x = 90 + -10
16x = 90 + -10

Combine like terms: 90 + -10 = 80
16x = 80

Divide each side by '16'.
x = 5

Simplifying
x = 5

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