Question

X + 4y = 1 3x + 5y = 10

Answer 1

Explanation:

x + 4y = 10 ---(1)

13x + 5y = 10 ---(2)

(1) x 13 : 13x + 52y = 130 ---(3)

(3)-(2) : 47y = 120

y = 120/47 ---(4)

sub (4) into (1)

x + 4y = 10

x + 4(120/47) = 10

x = -10/47