ANSWER : y=z/5x-3/5
EXPLANATION : z= 3x + 5xy
Move 3x to the other side
Sing changes from +3x to -3x
z-3x=3x-3x+5xy
z-3x=5xy
Divide both sides by 5x to get y by itself
z/5x-3x/5x=5xy/5x
Cross out 5x and 5x
Divide by 5 and x
Then becomes 1*1*y=y
-3x/5x ( cross out x and x )
Then becomes -3/5
answer: y=z/5x-3/5
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