SOLUTION: 3x+7 when x=-3

Algebra ->  Expressions-with-variables -> SOLUTION: 3x+7 when x=-3      Log On


   

Question 150517: 3x+7 when x=-3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3%2Ax%2B7 Start with the given expression.


3%2A%28-3%29%2B7 Plug in x=-3


-9%2B7 Multiply 3 and -3 to get -9.


-2 Add -9 and 7 to get -2.


So 3%2A%28-3%29%2B7=-2


So 3%2Ax%2B7=-2 when x=-3