how would you solve and check the answer, back to the original problem for 3w+2+3w=-4+9?
3w+2+3w=-4+9
6w+2=5
6w=3
w=1/2
Now put 1/2 back into the original problem.
3(1/2)+2+3(1/2)=-4+9
6w+2=5
6w=3
w=1/2
Now put 1/2 back into the original problem.
3(1/2)+2+3(1/2)=-4+9