3+5x+2x-1=142

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Solution for 3+5x+2x-1=142 equation:


Simplifying
3 + 5x + 2x + -1 = 142

Reorder the terms:
3 + -1 + 5x + 2x = 142

Combine like terms: 3 + -1 = 2
2 + 5x + 2x = 142

Combine like terms: 5x + 2x = 7x
2 + 7x = 142

Solving
2 + 7x = 142

Solving for variable 'x'.

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

Add '-2' to each side of the equation.
2 + -2 + 7x = 142 + -2

Combine like terms: 2 + -2 = 0
0 + 7x = 142 + -2
7x = 142 + -2

Combine like terms: 142 + -2 = 140
7x = 140

Divide each side by '7'.
x = 20

Simplifying
x = 20

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