Question

How to solve two step equations −9x+1=−80?

Answer 1

-9x=-80-1

-9x=-81

x=9

....

Answer 2

Solution:

Given linear (simple) equation in one variable x :

-9x+1 = -80

subtract 1 from both sides of the equation, we get

=> -9x+1-1 = -80-1

=> -9x = -81

Divide each term by (-9), we get

=> (-9x)/(-9) = (-81)/(-9)

=> x = 9

Therefore,

x = 9

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