Question

Solve 28 + 7y =91

Y=.....​

Answer 1

Y=9

Explanation:

28 + 7y =91

first subtract 28 from both sides

28-28+7y=91-28

7y= 63

then divide both sides by 7

7y/7=63/7

y=9

ANSWER CHECK

to see if the answer is correct substitute the answer you got for the variable

y=9

28 + 7(9)

multiply 7 and 9

7(9)=63

63+28= 91

Answer 2

`y = 9`

Explanation:

`28 + 7y = 91 \\ 7y = 91 - 28 \\ 7y = 63 \\ (7y)/(7) = (63)/(7) \\ y = 9`