1. 5x + 2 = 7 x = … 2. 4/y = 16/20 y = … ​

بــــــسْمِ اللّٰهِ الرَّ حْمٰنِ الرَّ حِيْمِ

Pertanyaan 1

5x + 2 = 7

5x = 7 – 2

5x = 5

x = 5/5

x = 1

Pertanyaan 2

4/y = 16/20

(4 × 20) = (16 × y)

80 = 16y

16y = 80

y = 80/16

y = 5

1. 5x + 2 = 7

x = 1

pembuktian:

5x + 2

5(1) + 2

5 + 2

7

2. 4/y = 16/20

y = 5

sederhana 16/20 dgn cara di bagi 4

4/y = 16/20

4/y = 4/5

y = 5