21x+16-8x=42

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Solution for 21x+16-8x=42 equation:


Simplifying
21x + 16 + -8x = 42

Reorder the terms:
16 + 21x + -8x = 42

Combine like terms: 21x + -8x = 13x
16 + 13x = 42

Solving
16 + 13x = 42

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 13x = 42 + -16

Combine like terms: 16 + -16 = 0
0 + 13x = 42 + -16
13x = 42 + -16

Combine like terms: 42 + -16 = 26
13x = 26

Divide each side by '13'.
x = 2

Simplifying
x = 2

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