a+b+90=100

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Solution for a+b+90=100 equation:


Simplifying
a + b + 90 = 100

Reorder the terms:
90 + a + b = 100

Solving
90 + a + b = 100

Solving for variable 'a'.

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

Add '-90' to each side of the equation.
90 + a + -90 + b = 100 + -90

Reorder the terms:
90 + -90 + a + b = 100 + -90

Combine like terms: 90 + -90 = 0
0 + a + b = 100 + -90
a + b = 100 + -90

Combine like terms: 100 + -90 = 10
a + b = 10

Add '-1b' to each side of the equation.
a + b + -1b = 10 + -1b

Combine like terms: b + -1b = 0
a + 0 = 10 + -1b
a = 10 + -1b

Simplifying
a = 10 + -1b

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