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-9t + 2 = 56

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3 Answers

-9t +2 = 56
 
subtract 2 from both sides.            Test if -6 plugged into original equation.
                                                      
                                                      -9(-6) + 2   = 54
  -9t + 2 - 2 = 56 -2
                                                       54 +2 =
    -9t = 54
                                                         56 = 56     
       t = -6
    
      
-9t + 2 = 56
 
Subtract 2 from each side
 
-9t +2 (-2) = 56 -2
-9t = 54, divide by -9 on each side
t = -6
 
The trick to the ax + b = c is to add or subtract b to both sides (depending on the sign) and divide by (a) to get x by itself.