30x+40=100

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Solution for 30x+40=100 equation: 


Simplifying
30x + 40 = 100

Reorder the terms:
40 + 30x = 100

Solving
40 + 30x = 100

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + 30x = 100 + -40

Combine like terms: 40 + -40 = 0
0 + 30x = 100 + -40
30x = 100 + -40

Combine like terms: 100 + -40 = 60
30x = 60

Divide each side by '30'.
x = 2

Simplifying
x = 2

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