0.7(x+40)+0.7x=77

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Solution for 0.7(x+40)+0.7x=77 equation: 


Simplifying
0.7(x + 40) + 0.7x = 77

Reorder the terms:
0.7(40 + x) + 0.7x = 77
(40 * 0.7 + x * 0.7) + 0.7x = 77
(28 + 0.7x) + 0.7x = 77

Combine like terms: 0.7x + 0.7x = 1.4x
28 + 1.4x = 77

Solving
28 + 1.4x = 77

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 1.4x = 77 + -28

Combine like terms: 28 + -28 = 0
0 + 1.4x = 77 + -28
1.4x = 77 + -28

Combine like terms: 77 + -28 = 49
1.4x = 49

Divide each side by '1.4'.
x = 35

Simplifying
x = 35

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