Answer:
Step 2
Step-by-step explanation:
In step 2 the expression was 40+20 which would have been 60 but he might have thought addition sign was subtraction so he did 40-20 which is 20 so he is wrong made mistake in step 2
Answer:
It 13
Step-by-step explanation:
Answer:
G and H
Step-by-step explanation:
just took the test in edg.
Im not sure but I think could be
3x=0