Question

twice a number plus three times another number equals 4. three times the first number plus four times the other number is 7. what are the numbers?

Answer 1

x=5, y=-2. (5, -2).

Explanation:

2x+3y=4

3x+4y=7

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3(2x+3y)=3(4)

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

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6x+9y=12

-6x-8y=-14

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y=-2

2x+3(-2)=4

2x-6=4

2x=4+6

2x=10

x=10/2

x=5