4x+5(x-4)=7

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Solution for 4x+5(x-4)=7 equation:


Simplifying
4x + 5(x + -4) = 7

Reorder the terms:
4x + 5(-4 + x) = 7
4x + (-4 * 5 + x * 5) = 7
4x + (-20 + 5x) = 7

Reorder the terms:
-20 + 4x + 5x = 7

Combine like terms: 4x + 5x = 9x
-20 + 9x = 7

Solving
-20 + 9x = 7

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 9x = 7 + 20

Combine like terms: -20 + 20 = 0
0 + 9x = 7 + 20
9x = 7 + 20

Combine like terms: 7 + 20 = 27
9x = 27

Divide each side by '9'.
x = 3

Simplifying
x = 3

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