0.3(x+70)+0.7(x-60)=-1

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Solution for 0.3(x+70)+0.7(x-60)=-1 equation: 


Simplifying
0.3(x + 70) + 0.7(x + -60) = -1

Reorder the terms:
0.3(70 + x) + 0.7(x + -60) = -1
(70 * 0.3 + x * 0.3) + 0.7(x + -60) = -1
(21 + 0.3x) + 0.7(x + -60) = -1

Reorder the terms:
21 + 0.3x + 0.7(-60 + x) = -1
21 + 0.3x + (-60 * 0.7 + x * 0.7) = -1
21 + 0.3x + (-42 + 0.7x) = -1

Reorder the terms:
21 + -42 + 0.3x + 0.7x = -1

Combine like terms: 21 + -42 = -21
-21 + 0.3x + 0.7x = -1

Combine like terms: 0.3x + 0.7x = 1x
-21 + 1x = -1

Solving
-21 + 1x = -1

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 1x = -1 + 21

Combine like terms: -21 + 21 = 0
0 + 1x = -1 + 21
1x = -1 + 21

Combine like terms: -1 + 21 = 20
1x = 20

Divide each side by '1'.
x = 20

Simplifying
x = 20

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