3(x-2)+7(x+4)=42

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Solution for 3(x-2)+7(x+4)=42 equation:


Simplifying
3(x + -2) + 7(x + 4) = 42

Reorder the terms:
3(-2 + x) + 7(x + 4) = 42
(-2 * 3 + x * 3) + 7(x + 4) = 42
(-6 + 3x) + 7(x + 4) = 42

Reorder the terms:
-6 + 3x + 7(4 + x) = 42
-6 + 3x + (4 * 7 + x * 7) = 42
-6 + 3x + (28 + 7x) = 42

Reorder the terms:
-6 + 28 + 3x + 7x = 42

Combine like terms: -6 + 28 = 22
22 + 3x + 7x = 42

Combine like terms: 3x + 7x = 10x
22 + 10x = 42

Solving
22 + 10x = 42

Solving for variable 'x'.

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

Add '-22' to each side of the equation.
22 + -22 + 10x = 42 + -22

Combine like terms: 22 + -22 = 0
0 + 10x = 42 + -22
10x = 42 + -22

Combine like terms: 42 + -22 = 20
10x = 20

Divide each side by '10'.
x = 2

Simplifying
x = 2

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