15=0.3x+7

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Solution for 15=0.3x+7 equation:


Simplifying
15 = 0.3x + 7

Reorder the terms:
15 = 7 + 0.3x

Solving
15 = 7 + 0.3x

Solving for variable 'x'.

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

Add '-0.3x' to each side of the equation.
15 + -0.3x = 7 + 0.3x + -0.3x

Combine like terms: 0.3x + -0.3x = 0.0
15 + -0.3x = 7 + 0.0
15 + -0.3x = 7

Add '-15' to each side of the equation.
15 + -15 + -0.3x = 7 + -15

Combine like terms: 15 + -15 = 0
0 + -0.3x = 7 + -15
-0.3x = 7 + -15

Combine like terms: 7 + -15 = -8
-0.3x = -8

Divide each side by '-0.3'.
x = 26.66666667

Simplifying
x = 26.66666667

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