31a-2=2(4a+45)

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Solution for 31a-2=2(4a+45) equation:


Simplifying
31a + -2 = 2(4a + 45)

Reorder the terms:
-2 + 31a = 2(4a + 45)

Reorder the terms:
-2 + 31a = 2(45 + 4a)
-2 + 31a = (45 * 2 + 4a * 2)
-2 + 31a = (90 + 8a)

Solving
-2 + 31a = 90 + 8a

Solving for variable 'a'.

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

Add '-8a' to each side of the equation.
-2 + 31a + -8a = 90 + 8a + -8a

Combine like terms: 31a + -8a = 23a
-2 + 23a = 90 + 8a + -8a

Combine like terms: 8a + -8a = 0
-2 + 23a = 90 + 0
-2 + 23a = 90

Add '2' to each side of the equation.
-2 + 2 + 23a = 90 + 2

Combine like terms: -2 + 2 = 0
0 + 23a = 90 + 2
23a = 90 + 2

Combine like terms: 90 + 2 = 92
23a = 92

Divide each side by '23'.
a = 4

Simplifying
a = 4

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