Question

3x+5y=74 and 1x+1y=20

Answer 1

x=13, y=7. (13, 7).

Answer 2

x=13, y=7. (13, 7).

Explanation:

3x+5y=74

x+y=20

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x=20-y

3(20-y)+5y=74

60-3y+5y=74

60+2y=74

2y=74-60

2y=14

y=14/2

y=7

x+7=20

x=20-7

x=13