7x+(16+3x)=21

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Solution for 7x+(16+3x)=21 equation:


Simplifying
7x + (16 + 3x) = 21

Remove parenthesis around (16 + 3x)
7x + 16 + 3x = 21

Reorder the terms:
16 + 7x + 3x = 21

Combine like terms: 7x + 3x = 10x
16 + 10x = 21

Solving
16 + 10x = 21

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 + 10x = 21 + -16

Combine like terms: 16 + -16 = 0
0 + 10x = 21 + -16
10x = 21 + -16

Combine like terms: 21 + -16 = 5
10x = 5

Divide each side by '10'.
x = 0.5

Simplifying
x = 0.5

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