a+1=91

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Solution for a+1=91 equation: 


Simplifying
a + 1 = 91

Reorder the terms:
1 + a = 91

Solving
1 + a = 91

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + a = 91 + -1

Combine like terms: 1 + -1 = 0
0 + a = 91 + -1
a = 91 + -1

Combine like terms: 91 + -1 = 90
a = 90

Simplifying
a = 90

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