Question

X+y= 37
X:y=3 bersisa 5
X-y=…

Answer 1

X + y = 37
x = 37 - y

x/y = 3 sisa 5

maka,

x/y = 3 5/y
x/y = (3y + 5)/y

karena penyebutnya sama, maka abaikan

x = 3y + 5
37 - y = 3y + 5
37 - 5 = 3y + y
32 = 4y
y = 32/4
y = 8

x + y = 37
x + 8 = 37
x = 37 - 8
x = 29

x - y = 29 - 8
= 21

Answer 2

X + y = 37 --> x = 37 - y
x : y = 3 sisa 5 --> x = 3y + 5
.
37 - y = 3y + 5
- 4y = - 32
y = 8
x = 37 - 8 = 29
..
x - y = 29 - 8 = 21