How do you solve #7+ 4y = 39#?

3 Answers
Apr 23, 2018

Answer:

y=8

Explanation:

you'll want to get y by itself one one side of the equation, so subtract a 7 from both sides

#7+4y=39#
subtract 7 from both sides

=#4y=32#

divide both sides by 4 to isolate y

=#y=8#

Apr 23, 2018

Answer:

#y=8#

Explanation:

We have to reverse the mapping to find out the answer

Minus 7 on both sides

#7-color(red)(7)+4y=39-color(red)7#

#4y=32#

Now divide both sides by 4

#4/color(red)4y=32/color(red)4#

#y=8#

Apr 23, 2018

Answer:

#y=8#

Explanation:

In order to find #y#, we must first isolate the variable. Therefore, we subtract #7# from both sides.

#7-7=0 and 39-7=32#

Now, we're left with

#4y=32#

We still need to isolate the variable. Thus dividing by #4# on both sides;

#(4y)/4 = y and 32/4= 8#

So

#y=8#