1. 代入消元法和加减消元法各15道题,练习量较充足。
2. 代入消元法和加减消元法是解方程组的基本方法,练习这两个方法有助于加深对方程组的理解,为以后拓展更多解题方法打下基础。
3. 在练习代入消元法和加减消元法的基础上,还可以尝试使用其他解题方法,在实际应用中更快更准地解决问题。
代入消元法和加减消元法各十五道
代入消元法:
1. $2x + 3y = 6$
$3x - 2y = 5$
2. $6x + 4y = 10$
$5x - 3y = 5$
3. $4x + 2y = 6$
$3x - y = 4$
4. $x + 2y = 3$
$2x - y = 4$
5. $3x + 4y = 10$
$2x - y = 5$
6. $5x + 6y = 11$
$3x - y = 4$
7. $2x + y = 3$
$x + 2y = 4$
8. $5x + 3y = 8$
$2x - y = 3$
9. $4x + y = 5$
$2x - 3y = 1$
10. $3x + y = 4$
$2x + 2y = 5$
11. $5x + 2y = 7$
$3x + y = 4$
12. $4x - y = 2$
$2x + 3y = 5$
13. $2x + y = 3$
$3x + 2y = 4$
14. $6x + 2y = 8$
$4x - y = 3$
15. $3x + y = 4$
$2x + 2y = 5$
加减消元法:
16. $2x + y = 3$
$x + 2y = 4$
17. $3x + y = 5$
$2x - y = 3$
18. $4x + y = 6$
$2x - y = 3$
19. $5x + y = 7$
$2x - y = 3$
20. $6x + y = 8$
$2x - y = 3$
代入消元法和加减消元法各十五道
1.y=2x
x+2y=550
2.2x=6y_3
x=5
3.5+2y=7
x-88y=98
4.5y-2X=4O
X=5
5.6-8y=2
x+4y=8
6.8y十2x=88
X=2y
7.X=3y十2
3y十2X=12
8.6X-2Y=2O
X=3y+2
9.22+5y=2x
4x十5y=59
10.6X十21=2y
2y=4x
11.5x十6y=3O
5X=9y
12.22+54y=X
X+Ⅱ=66
13.0Y+5x=4y+2
5X十4y=20
14.5X十6y=80
80-6y=30
15.78+78X=y
2y=156
1.2X-y=5
3X十Y=5
2.3X+4y=60
2y一3x=40
3.5X+8Y=90
7x一8Y=6
4-26+5x一2y=2
5X+2Y=20
5-6x+5y=40
6x-5y=8
6.7x-3y=6
7x+3y=8
7.26+5y-5x=6
6y+5x=10
8.66x+y=80
14x-y=0
9.24x+y=20
24x-y=28
10.15x+15y=30
15x-15y=30
11.47x+2y=6
2y-47x=2
12.56y+28x=28
28x-56y=28
13.56y+5x=10
5y-56y=10
14.25x-25y=50
5x+25y=10
15.36x+2y=4
4y-36x=2