40+3x+20-5x=30

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Solution for 40+3x+20-5x=30 equation: 


Simplifying
40 + 3x + 20 + -5x = 30

Reorder the terms:
40 + 20 + 3x + -5x = 30

Combine like terms: 40 + 20 = 60
60 + 3x + -5x = 30

Combine like terms: 3x + -5x = -2x
60 + -2x = 30

Solving
60 + -2x = 30

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + -2x = 30 + -60

Combine like terms: 60 + -60 = 0
0 + -2x = 30 + -60
-2x = 30 + -60

Combine like terms: 30 + -60 = -30
-2x = -30

Divide each side by '-2'.
x = 15

Simplifying
x = 15

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