70-a=60

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Solution for 70-a=60 equation: 


Simplifying
70 + -1a = 60

Solving
70 + -1a = 60

Solving for variable 'a'.

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

Add '-70' to each side of the equation.
70 + -70 + -1a = 60 + -70

Combine like terms: 70 + -70 = 0
0 + -1a = 60 + -70
-1a = 60 + -70

Combine like terms: 60 + -70 = -10
-1a = -10

Divide each side by '-1'.
a = 10

Simplifying
a = 10

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