3(1-7x)-8(7x+5)=40

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Solution for 3(1-7x)-8(7x+5)=40 equation:


Simplifying
3(1 + -7x) + -8(7x + 5) = 40
(1 * 3 + -7x * 3) + -8(7x + 5) = 40
(3 + -21x) + -8(7x + 5) = 40

Reorder the terms:
3 + -21x + -8(5 + 7x) = 40
3 + -21x + (5 * -8 + 7x * -8) = 40
3 + -21x + (-40 + -56x) = 40

Reorder the terms:
3 + -40 + -21x + -56x = 40

Combine like terms: 3 + -40 = -37
-37 + -21x + -56x = 40

Combine like terms: -21x + -56x = -77x
-37 + -77x = 40

Solving
-37 + -77x = 40

Solving for variable 'x'.

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

Add '37' to each side of the equation.
-37 + 37 + -77x = 40 + 37

Combine like terms: -37 + 37 = 0
0 + -77x = 40 + 37
-77x = 40 + 37

Combine like terms: 40 + 37 = 77
-77x = 77

Divide each side by '-77'.
x = -1

Simplifying
x = -1

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