-40=5a-7a+4a

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Solution for -40=5a-7a+4a equation:


Simplifying
-40 = 5a + -7a + 4a

Combine like terms: 5a + -7a = -2a
-40 = -2a + 4a

Combine like terms: -2a + 4a = 2a
-40 = 2a

Solving
-40 = 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-40 + -2a = 2a + -2a

Combine like terms: 2a + -2a = 0
-40 + -2a = 0

Add '40' to each side of the equation.
-40 + 40 + -2a = 0 + 40

Combine like terms: -40 + 40 = 0
0 + -2a = 0 + 40
-2a = 0 + 40

Combine like terms: 0 + 40 = 40
-2a = 40

Divide each side by '-2'.
a = -20

Simplifying
a = -20

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