3x-5(2x+7)-5y=-21

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Solution for 3x-5(2x+7)-5y=-21 equation:


Simplifying
3x + -5(2x + 7) + -5y = -21

Reorder the terms:
3x + -5(7 + 2x) + -5y = -21
3x + (7 * -5 + 2x * -5) + -5y = -21
3x + (-35 + -10x) + -5y = -21

Reorder the terms:
-35 + 3x + -10x + -5y = -21

Combine like terms: 3x + -10x = -7x
-35 + -7x + -5y = -21

Solving
-35 + -7x + -5y = -21

Solving for variable 'x'.

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

Add '35' to each side of the equation.
-35 + -7x + 35 + -5y = -21 + 35

Reorder the terms:
-35 + 35 + -7x + -5y = -21 + 35

Combine like terms: -35 + 35 = 0
0 + -7x + -5y = -21 + 35
-7x + -5y = -21 + 35

Combine like terms: -21 + 35 = 14
-7x + -5y = 14

Add '5y' to each side of the equation.
-7x + -5y + 5y = 14 + 5y

Combine like terms: -5y + 5y = 0
-7x + 0 = 14 + 5y
-7x = 14 + 5y

Divide each side by '-7'.
x = -2 + -0.7142857143y

Simplifying
x = -2 + -0.7142857143y

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