. (20+x)×5=500 x= 120

. 34-2x=3×( 18-2x) x=5

. x+x+ 140-2 10 = 270 x = 50

. ( 15+x)×2=70 x=20

x+60=90 x=30

74+5x=9

10-x=8

8x+9= 17

9+6x= 14

x+9x=4+7

2x+9= 17

8-4x=6

6x-7= 12

7x-9=8

x-56= 1

8-7x= 1

x-30= 12

6x-2 1=2 1

6x-3=6

9x= 18

4x- 18= 13

5x+9= 1 1

6-2x= 1 1

x+4+8=23

7x- 12=8

X-5.7=2. 15

15 5X-2X= 18

3X 0.7=5

3.5×2= 4.2 x

26× 1.5= 2x

0.5× 16― 16×0.2=4x

9.25-X=0.403

16.9÷X=0。 three

X÷0.5=2.6

x+ 13=33

3-5 times =80

1.8- 6x=54

6.7 times -60.3=6.7

9 +4x =40

0.2x-0.4+0.5=3.7

9.4x-0.4x= 16.2

12 -4x=20

1/3 x+5/6 x= 1.4

12 x+34 x= 1

18x- 14 x= 12

23 x-5× 14 = 14