Question

$2x + y - 7 = 0 \: x + 3y = 11$
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Answer 1

Answer:

2x + y - 7 = 0

2x + y = 7

2x = 7 - y

x = (7 - y) /2

x + 3y = 11

(7 - y) /2 + 3y = 11

Takimg lcm,

(7 - y + 6y)/2 = 11

7 - y + 6y = 22

5y = 22-7

5y = 15

y = 15/5 = 3

x = (7 - y) /2 = (7 - 3)/2 = 4/2 = 2

y = 3

x = 2

WMK