3x+7+4(x-13)=18

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Solution for 3x+7+4(x-13)=18 equation:


Simplifying
3x + 7 + 4(x + -13) = 18

Reorder the terms:
3x + 7 + 4(-13 + x) = 18
3x + 7 + (-13 * 4 + x * 4) = 18
3x + 7 + (-52 + 4x) = 18

Reorder the terms:
7 + -52 + 3x + 4x = 18

Combine like terms: 7 + -52 = -45
-45 + 3x + 4x = 18

Combine like terms: 3x + 4x = 7x
-45 + 7x = 18

Solving
-45 + 7x = 18

Solving for variable 'x'.

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

Add '45' to each side of the equation.
-45 + 45 + 7x = 18 + 45

Combine like terms: -45 + 45 = 0
0 + 7x = 18 + 45
7x = 18 + 45

Combine like terms: 18 + 45 = 63
7x = 63

Divide each side by '7'.
x = 9

Simplifying
x = 9

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