2x+y=3
3x+2=5
HOW TO SOLVE BY ELIMINATION?
2008-09-13 5:22 pm
回答 (2)
2008-09-13 8:11 pm
✔ 最佳答案
Being a mind reader, assume that you mean :-2x + y = 3
3x + 2y = 5 ! !
- 4x - 2y = - 6
3x + 2y = 5-----ADD
- x = - 1
x = 1
2 + y = 3
y = 1
x = 1 , y = 1
2008-09-14 12:27 am
2x + y = 3
3x + 2y = 5
2x + y = 3
2(2x + y) = 2(3)
4x + 2y = 6
...4x + 2y = 6
‒ 3x + 2y = 5 (subtraction)
------------------------
x = 1
2x + y = 3
2(1) + y = 3
y = 3 - 2
y = 1
â´ x = 1 , y = 1
3x + 2y = 5
2x + y = 3
2(2x + y) = 2(3)
4x + 2y = 6
...4x + 2y = 6
‒ 3x + 2y = 5 (subtraction)
------------------------
x = 1
2x + y = 3
2(1) + y = 3
y = 3 - 2
y = 1
â´ x = 1 , y = 1
收錄日期: 2021-05-01 11:10:13
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