4x+3(x-3)=40

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


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

Reorder the terms:
4x + 3(-3 + x) = 40
4x + (-3 * 3 + x * 3) = 40
4x + (-9 + 3x) = 40

Reorder the terms:
-9 + 4x + 3x = 40

Combine like terms: 4x + 3x = 7x
-9 + 7x = 40

Solving
-9 + 7x = 40

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 7x = 40 + 9

Combine like terms: -9 + 9 = 0
0 + 7x = 40 + 9
7x = 40 + 9

Combine like terms: 40 + 9 = 49
7x = 49

Divide each side by '7'.
x = 7

Simplifying
x = 7

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