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

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


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

Reorder the terms:
42 = 2x + 3 + 7(-4 + x)
42 = 2x + 3 + (-4 * 7 + x * 7)
42 = 2x + 3 + (-28 + 7x)

Reorder the terms:
42 = 3 + -28 + 2x + 7x

Combine like terms: 3 + -28 = -25
42 = -25 + 2x + 7x

Combine like terms: 2x + 7x = 9x
42 = -25 + 9x

Solving
42 = -25 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
42 + -9x = -25 + 9x + -9x

Combine like terms: 9x + -9x = 0
42 + -9x = -25 + 0
42 + -9x = -25

Add '-42' to each side of the equation.
42 + -42 + -9x = -25 + -42

Combine like terms: 42 + -42 = 0
0 + -9x = -25 + -42
-9x = -25 + -42

Combine like terms: -25 + -42 = -67
-9x = -67

Divide each side by '-9'.
x = 7.444444444

Simplifying
x = 7.444444444

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