Question 64389
Question #21 is Use the substitution method to solve the linear system. These are the equations:2x+3y=31, y=x+7 i tried to substituted it then it looked like this 2x+3(x+7)=31 then i combined like terms and it looked like this 5x+7=31
Whoops:  Right here you should have 5x+21=31.
Then x=2
Cheers,
Stan H.