Question

A.(x+3):5=63:45
b.39:91=(y+1):7

Answer 1

(X + 3) : 5 = 63 : 45 disamakan
9(x + 3) :5 = 63 : 45
9x + 27 : 45 = 63 :45
9x + 27 = 63
 9x = 63 - 27
 x = 36/9
 x = 4

cek
(4 + 3) : 5 = 63 : 45
9 ( 4 + 3) : 9x5 = 63 : 45
36 + 27 : 45 = 63 : 45
63 : 45 = 63 : 45