Question 111067
WHEN YOU SWAP SIDES FOR TERMS OR NUMBERS YOU MUST CHANGE THE SIGN.
WHAT YOU ARE DOING BASICLY IS ADDING OR SUBTRACTING THE SAME VALUE FROM BOTH SIDES.
12-4H=-18+11H NOW SUBTRACT 12 & SUBTRACT 11H FROM BOTH SIDES.
12+(-12)-4H+(-11H)=11H+(-11H)-18+(-12)
-15H=-30
H=-30/-15
H=2 ANSWER.