Question

15a - l7b. =28
179 + 15b = - 36​

Answer 1

Answer:

a=163/15 and b =43/3

Step-by-step explanation:

179+15b = -36

15b = -36-179

15b = -215

b = -215/15

b = 43/3

now putting the value of b in first equation.

15a - 17b = 28

15a - 17×43/3 =28

15a - 731/3 = 28

(45a - 731)÷3 = 28

45a - 731 = 28×3

45a - 731 = 84

45a = 84+731

45a = 815

a = 815/45

a = 163 / 15