Question

Solve, using the of substitution x+y=5 ; 3x+y=11​

Answer 1

Answer:

x=1

y=4

Step-by-step explanation:

x+y=5 give equation number 1

3x+y=11 equation number 2

then,

x = 5-y equation number 3

substitute 3 in 2

3 x 5-y + y = 11

15-y=11

-y = 11-15

-y = -4

y = 4

substitute y = 4 in 1

x+4=5

x=5-4

x=1

Answer 2

Answer:

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