Question

递等式,解方程

递等式,解方程各要20题,还要有答案.要求:递等式,3步以上计算;解方程,左右都要有未知数.
今天就要!!!
8题就够,回答好的加分!!!!!!!!!!

Answer 1

X－ X= 2X + = 70%X + 20%X = 3.6

X×=20× 25% + 10X = X - 15%X = 68

X＋X＝121 5X－3×＝ X÷＝12

6X＋5 =13.4 3X=

X÷= X＋X= 4X－6×=2

÷X= X = X = ×

X÷ =× 4x－3 ×9 = 29 x + x = 4

X－21×=4

6X＋5 =13.4 X-X= 4χ－6＝38

5X= X= X÷=

X÷=12 X= X=×

X÷=÷ X-0.25= =30%

4+0.7X=102 X+X=42 X+X=105

X-X=400 X-0.125X=8 =

X+X=18 X×( + )= x－0.375x=

x×+=4× X－X＝12 5 X－2.4×5＝8

0.36×5- x = (x- 4.5) = 7 x- 25%x = 10

x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21

X＋25%X=90 X－X=

Answer 2

5x+2x=14
(5+2)x=14
7x=14
x=14/7
x=2

Answer 3

5x+2x=14
(5+2)x=14
7x=14
x=14/7
x=2

Answer 4

5x+2x=14