Question

Tolong di jawab no. 2. dari a-d! please pake cara!

Answer 1

Verified answer

A)
24 : (x + 7) = 16 : 10

16 (x + 7) = 24 × 10
16 (x + 7) = 240

x + 7 = 15
x = 15 - 7
x = 8

b)
(5x - 2) : 72 = 18 : 27

5x = 48 + 2

x = 10

c)
8 : 10 = (y + 15) : 25

8 = y + 15
10 = 25

10(y + 15) = 25 × 8
10y + 150 = 200
10y = 200 - 150
10y = 50
y = 5

d)
21 : 28 = 24 : (3y - 4)
21 (3y - 4) = 24 × 28
63y - 84 = 672
63y = 672 + 84
63y = 756
y = 756 : 63
y = 12