What is 8y plus 7-7y equals 6 plus 4?

Answer 1

(i) <- first part

8y+7-7y = 6+4

8y-7y = 6+4-7

y = 3

(ii) <- second part, put the value of 'y' that you found where y is in the question.

8(3) + 7 - 7(3) = 6+4

24 + 7 - 21 = 10

31-21 = 10

10 = 10

both sides equal the same thing therefore this equation is proved.