How do you solve #y- 9y = - 16- 64#?

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Answer 1 · 2018-06-13T05:06:57

#y=10#

As explained below:

#y-9y=-16-64#

Simplify both sides first:

#-8y=-80#

Divide by #-8# both sides:

#y=(-80)/-8# ----> #y=80/8#

#y=10#

Checking the answer:

#y-9y=-16-64#

#10-9(10) = -80

#10-90=-80 ----> Correct!

Answer 2 · 2018-06-13T05:16:29

The answer would be #color(blue)"10"#.

# y-9y= -8y# ( #color(green)"Solving RHS"#)................(1)
# -16-64=-80# ( #color(green)"Solving LHS"#).................(2)

#color(red)"Equating the above equations, we get,"#

#color(purple)"y=10"#