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

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


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

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

Combine like terms: 45 + 45 = 90
90 + 4a + 4a = 31a + -2

Combine like terms: 4a + 4a = 8a
90 + 8a = 31a + -2

Reorder the terms:
90 + 8a = -2 + 31a

Solving
90 + 8a = -2 + 31a

Solving for variable 'a'.

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

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

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

Combine like terms: 31a + -31a = 0
90 + -23a = -2 + 0
90 + -23a = -2

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

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

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

Divide each side by '-23'.
a = 4

Simplifying
a = 4

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