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1 vote
3) X-y= 11
2x + y = 19

User Udarts
by
8.2k points

1 Answer

1 vote

Answer:

x = 10, y = -1

Explanation:

x - y = 11 . . . . . . . eq 1

2x + y = 19 . . . . . . eq 2

Substitute eq 1 into eq 2.

Hence eq 1 = x = 11 + y

Substituting into eq 2 will give you;

2(11 +y) + y = 19

22 +2y + y = 19

3y = 19 - 22

3y = -3

y = -1

Substitute y into eq 1 to get x

that is x - (-1) = 11

x = 11 - 1

x = 10

User Lilya
by
8.0k points

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