keundrecrowe6792 keundrecrowe6792

30-01-2021
Mathematics

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two times a number added to another number 25. Three times the first number minus the other number ids 20. Find the numbers

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isabellalafargue2003 isabellalafargue2003

30-01-2021

Let x be the first number and y be the second.

2x + y = 25
3x - y =20

1) Add them together.

5x = 45
x = 9

2) Solve for y.

2(9) + y = 25
y=7

3) Check your work on the other equation.

3(9) - (7) = 20
27 - 7 =20
20 = 20

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