0.3(x+70)+0.9x=57

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Solution for 0.3(x+70)+0.9x=57 equation: 


Simplifying
0.3(x + 70) + 0.9x = 57

Reorder the terms:
0.3(70 + x) + 0.9x = 57
(70 * 0.3 + x * 0.3) + 0.9x = 57
(21 + 0.3x) + 0.9x = 57

Combine like terms: 0.3x + 0.9x = 1.2x
21 + 1.2x = 57

Solving
21 + 1.2x = 57

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 1.2x = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 1.2x = 57 + -21
1.2x = 57 + -21

Combine like terms: 57 + -21 = 36
1.2x = 36

Divide each side by '1.2'.
x = 30

Simplifying
x = 30

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