3(x-5)-4(12-x)=7

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Solution for 3(x-5)-4(12-x)=7 equation:


Simplifying
3(x + -5) + -4(12 + -1x) = 7

Reorder the terms:
3(-5 + x) + -4(12 + -1x) = 7
(-5 * 3 + x * 3) + -4(12 + -1x) = 7
(-15 + 3x) + -4(12 + -1x) = 7
-15 + 3x + (12 * -4 + -1x * -4) = 7
-15 + 3x + (-48 + 4x) = 7

Reorder the terms:
-15 + -48 + 3x + 4x = 7

Combine like terms: -15 + -48 = -63
-63 + 3x + 4x = 7

Combine like terms: 3x + 4x = 7x
-63 + 7x = 7

Solving
-63 + 7x = 7

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 7x = 7 + 63

Combine like terms: -63 + 63 = 0
0 + 7x = 7 + 63
7x = 7 + 63

Combine like terms: 7 + 63 = 70
7x = 70

Divide each side by '7'.
x = 10

Simplifying
x = 10

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