To solve for h, first isolate 4h:
T=4h+4z
T-4z=4h
Now divide both sides by 4.
T/4-z=h
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9z
7 + 4z = 437 + 4z -7 = 43 - 7 4z = 43 - 7 4z = 36 z = 9
its 10x +9y +1z
-6z 2 = 3z+ 4z+28 -6z+2 +3z = 3z+ 4z +28 +4z -6z+4z+2 = 3z+ 28 -10z+2 -3z= 28 - 2 -10z + -3z = 26 -13z/13 = 26/-13 z = -2
4z-11=45 4z=56 z=14