.10x+.15(20+x)=.12(20)

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Solution for .10x+.15(20+x)=.12(20) equation:


Simplifying
0.10x + 0.15(20 + x) = 0.12(20)
0.10x + (20 * 0.15 + x * 0.15) = 0.12(20)
0.10x + (3 + 0.15x) = 0.12(20)

Reorder the terms:
3 + 0.10x + 0.15x = 0.12(20)

Combine like terms: 0.10x + 0.15x = 0.25x
3 + 0.25x = 0.12(20)

Multiply 0.12 * 20
3 + 0.25x = 2.4

Solving
3 + 0.25x = 2.4

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 0.25x = 2.4 + -3

Combine like terms: 3 + -3 = 0
0 + 0.25x = 2.4 + -3
0.25x = 2.4 + -3

Combine like terms: 2.4 + -3 = -0.6
0.25x = -0.6

Divide each side by '0.25'.
x = -2.4

Simplifying
x = -2.4

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