7a-31=10a-5+8a-4

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Solution for 7a-31=10a-5+8a-4 equation:


Simplifying
7a + -31 = 10a + -5 + 8a + -4

Reorder the terms:
-31 + 7a = 10a + -5 + 8a + -4

Reorder the terms:
-31 + 7a = -5 + -4 + 10a + 8a

Combine like terms: -5 + -4 = -9
-31 + 7a = -9 + 10a + 8a

Combine like terms: 10a + 8a = 18a
-31 + 7a = -9 + 18a

Solving
-31 + 7a = -9 + 18a

Solving for variable 'a'.

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

Add '-18a' to each side of the equation.
-31 + 7a + -18a = -9 + 18a + -18a

Combine like terms: 7a + -18a = -11a
-31 + -11a = -9 + 18a + -18a

Combine like terms: 18a + -18a = 0
-31 + -11a = -9 + 0
-31 + -11a = -9

Add '31' to each side of the equation.
-31 + 31 + -11a = -9 + 31

Combine like terms: -31 + 31 = 0
0 + -11a = -9 + 31
-11a = -9 + 31

Combine like terms: -9 + 31 = 22
-11a = 22

Divide each side by '-11'.
a = -2

Simplifying
a = -2

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