4x+3(20-3x)=40

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Solution for 4x+3(20-3x)=40 equation:


Simplifying
4x + 3(20 + -3x) = 40
4x + (20 * 3 + -3x * 3) = 40
4x + (60 + -9x) = 40

Reorder the terms:
60 + 4x + -9x = 40

Combine like terms: 4x + -9x = -5x
60 + -5x = 40

Solving
60 + -5x = 40

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + -5x = 40 + -60

Combine like terms: 60 + -60 = 0
0 + -5x = 40 + -60
-5x = 40 + -60

Combine like terms: 40 + -60 = -20
-5x = -20

Divide each side by '-5'.
x = 4

Simplifying
x = 4

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