Question

solve for x; x+3y=10,x+y=6​

Answer 1

Answer:

x+3y=10 — 1

x+y=6 — 2

using 2

y = 6-x

put value of x in 1

x + 3(6-x) = 10

x + 18 - 3x = 10

18 - 2x = 10

18-10 = 2x

2x= 8

x = 4

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