4x+3=7x-42

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


Simplifying
4x + 3 = 7x + -42

Reorder the terms:
3 + 4x = 7x + -42

Reorder the terms:
3 + 4x = -42 + 7x

Solving
3 + 4x = -42 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
3 + 4x + -7x = -42 + 7x + -7x

Combine like terms: 4x + -7x = -3x
3 + -3x = -42 + 7x + -7x

Combine like terms: 7x + -7x = 0
3 + -3x = -42 + 0
3 + -3x = -42

Add '-3' to each side of the equation.
3 + -3 + -3x = -42 + -3

Combine like terms: 3 + -3 = 0
0 + -3x = -42 + -3
-3x = -42 + -3

Combine like terms: -42 + -3 = -45
-3x = -45

Divide each side by '-3'.
x = 15

Simplifying
x = 15

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