John spent 3/4 of his saving money for a birthday present and 1/7 of his saving money for clothes.He had only $27 left.a)What fraction of his total money he had spent?What Fraction of his money has left?b)what is the total of his money did he save from the beginning?

Answer 1

(3/4)x + (1/7)x + 27 = x
times 28
21x + 4x + 756 = 28x

at this point I can tell that he spent 25/28 of his money
and he would have 3/28 of it left over

25x + 756 = 28x
3x = 756
x = 252

state you conclusions