the answer is x=21.
since the equations are both on one side, the sum of the equations will be 180.
5x-17+2x+50=180
add the like variables.
7x+33=180
subtract 33 from 180.
7x=147
divide 147 by 7.
x=21
*to check your answer sub in 21 where the x is and the two answers together and you should get 180*
hope this helps!!
