4x+21+2x+9=90

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Solution for 4x+21+2x+9=90 equation:


Simplifying
4x + 21 + 2x + 9 = 90

Reorder the terms:
21 + 9 + 4x + 2x = 90

Combine like terms: 21 + 9 = 30
30 + 4x + 2x = 90

Combine like terms: 4x + 2x = 6x
30 + 6x = 90

Solving
30 + 6x = 90

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 6x = 90 + -30

Combine like terms: 30 + -30 = 0
0 + 6x = 90 + -30
6x = 90 + -30

Combine like terms: 90 + -30 = 60
6x = 60

Divide each side by '6'.
x = 10

Simplifying
x = 10

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