Answer:
y=12
Step-by-step explanation:
Lets write out the equation so it easy to work with.
7y=84
Divide both sides by 7
7y/7=84/7
Divide
y=12
Answer:
x=-1/4 thats the answer alternative
Answer: 
This is the fraction 2x/15 which can be read as 2x over 15
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Work Shown:
Divide
over
to get

You can think of it as dividing 14x^2 over 7x and that results in 2x. Then you place that result (2x) over 15 to end up with 2x/15
Ok so 1inch=40cm
2 inches by 1.5
multiply everybody by 40 and make them all centimeters
20*2=80
1.5*40=60
80cm by 60cm
1inch=2.54cm
find how many inches in 1 cm
divide both sides by 2.54
1/2.54inch=1cm
80 by 60 cm
multiply that by 1/2.54 nd find inches iquivlent
80 times 1/2.54=31.4960629921259842519685037008
60 times 1/2.54=23.622047...
ok so
dimentions is 31.4960629921259842519685037008 inches by 23.622047 inches