3x-4(x+5)=15-45

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Solution for 3x-4(x+5)=15-45 equation:


Simplifying
3x + -4(x + 5) = 15 + -45

Reorder the terms:
3x + -4(5 + x) = 15 + -45
3x + (5 * -4 + x * -4) = 15 + -45
3x + (-20 + -4x) = 15 + -45

Reorder the terms:
-20 + 3x + -4x = 15 + -45

Combine like terms: 3x + -4x = -1x
-20 + -1x = 15 + -45

Combine like terms: 15 + -45 = -30
-20 + -1x = -30

Solving
-20 + -1x = -30

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + -1x = -30 + 20

Combine like terms: -20 + 20 = 0
0 + -1x = -30 + 20
-1x = -30 + 20

Combine like terms: -30 + 20 = -10
-1x = -10

Divide each side by '-1'.
x = 10

Simplifying
x = 10

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