Question

by elimination method solve the sum 3xplus 4y=minus 6and 3xminus y=9
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Answer 1

Answer:

x = 2 and y = -3

Step-by-step explanation:

3x + 4y = -6 -----(1)

3x - y = 9 ----(2)

on subtract eq 1 and 2

3x + 4y = -6

3x - y = 9

- + -

5y = -15

y = -15/5

y = -3

put y in eq 2

3x - y = 9

3x - (-3) = 9

3x + 3 = 9

3x = 9 - 3

3x = 6

x = 6/3

x = 2

Answer 2

Answer:

Step-by-step explanation:

3x +4y= -6

3x -y =9