0.30(x+90)+0.10x=31

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Solution for 0.30(x+90)+0.10x=31 equation:


Simplifying
0.30(x + 90) + 0.10x = 31

Reorder the terms:
0.30(90 + x) + 0.10x = 31
(90 * 0.30 + x * 0.30) + 0.10x = 31
(27 + 0.30x) + 0.10x = 31

Combine like terms: 0.30x + 0.10x = 0.4x
27 + 0.4x = 31

Solving
27 + 0.4x = 31

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + 0.4x = 31 + -27

Combine like terms: 27 + -27 = 0
0 + 0.4x = 31 + -27
0.4x = 31 + -27

Combine like terms: 31 + -27 = 4
0.4x = 4

Divide each side by '0.4'.
x = 10

Simplifying
x = 10

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