4(a-8)+5(-5a-7)=-25

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Solution for 4(a-8)+5(-5a-7)=-25 equation:


Simplifying
4(a + -8) + 5(-5a + -7) = -25

Reorder the terms:
4(-8 + a) + 5(-5a + -7) = -25
(-8 * 4 + a * 4) + 5(-5a + -7) = -25
(-32 + 4a) + 5(-5a + -7) = -25

Reorder the terms:
-32 + 4a + 5(-7 + -5a) = -25
-32 + 4a + (-7 * 5 + -5a * 5) = -25
-32 + 4a + (-35 + -25a) = -25

Reorder the terms:
-32 + -35 + 4a + -25a = -25

Combine like terms: -32 + -35 = -67
-67 + 4a + -25a = -25

Combine like terms: 4a + -25a = -21a
-67 + -21a = -25

Solving
-67 + -21a = -25

Solving for variable 'a'.

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

Add '67' to each side of the equation.
-67 + 67 + -21a = -25 + 67

Combine like terms: -67 + 67 = 0
0 + -21a = -25 + 67
-21a = -25 + 67

Combine like terms: -25 + 67 = 42
-21a = 42

Divide each side by '-21'.
a = -2

Simplifying
a = -2

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