a+45=90

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Solution for a+45=90 equation: 


Simplifying
a + 45 = 90

Reorder the terms:
45 + a = 90

Solving
45 + a = 90

Solving for variable 'a'.

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

Add '-45' to each side of the equation.
45 + -45 + a = 90 + -45

Combine like terms: 45 + -45 = 0
0 + a = 90 + -45
a = 90 + -45

Combine like terms: 90 + -45 = 45
a = 45

Simplifying
a = 45

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