-4a+7(-a-1)=-84

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Solution for -4a+7(-a-1)=-84 equation:


Simplifying
-4a + 7(-1a + -1) = -84

Reorder the terms:
-4a + 7(-1 + -1a) = -84
-4a + (-1 * 7 + -1a * 7) = -84
-4a + (-7 + -7a) = -84

Reorder the terms:
-7 + -4a + -7a = -84

Combine like terms: -4a + -7a = -11a
-7 + -11a = -84

Solving
-7 + -11a = -84

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + -11a = -84 + 7

Combine like terms: -7 + 7 = 0
0 + -11a = -84 + 7
-11a = -84 + 7

Combine like terms: -84 + 7 = -77
-11a = -77

Divide each side by '-11'.
a = 7

Simplifying
a = 7

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