Question

chapter: simple linear equation
class 7
please fast​

Answer 1

Answer:

i) r = 2

ii) r = 80

Step-by-step explanation:

i) 5r + 6 - 2(3r -5) = 7r

=> 5r + 6 - 6r + 10 = 7r

=> 16 - r = 7r

=> 8r = 16

=> r = 16/8 = 2

ii) r - 0.4r = 48

=> 0.6r = 48

=> r = 48/0.6 = 80