Question

x+3y=1 & x-8y=7 find this​

Answer 1

Step-by-step explanation:

x + 3y = 1

x = 3y - 1

put the value of x in this equation

x - 8y = 7

3y - 1 - 8y = 7

11y -1 = 7

11y = 7+1

y = 8/11

put the value of y in this equation

x - 8y = 7

x - 8 ×8/11 = 7

x - 64/11 = 7

x = 7 + 64/11

x = 77 + 64 /11

x = 141 /11

x = 12.81