xEscuela primaria Deti
X-2/7X=3/4
70%X + 20%X = 3.6
25% + 10X =4/5
X - 15 %X = 68
X+3/8 X=121
5X-3×5/21 = 5/11
6X+5 =13.4
x \u( 6/35)=(26/45)×(13/25)
2(x-0.6)=4
(0.5 +x)+x=9,8÷2
2(X+X+0,5)=9,8
2500x=6x
3200=455X +X
X-0.8X=6
12x-8x=4.8
7.5*2X=15
1.2x=81.6
x+5.6=9.4
52-x =15
91÷x =1.3
X+8.3=10.7
p>
15x =3
3x-8=16
7(x-2)=2x+3
3x +9=2718( x-2)=270
12x=300-4x
7x+5.3=7.4
3x÷5=4.8
30 \x+25 = 85
1.4×8-2x=6
6x-12.8×3=0.06
410-3x= 170
3(x+0.5)=21
0.5x+8=43
6x-3x=18
(200 -x)÷5 =30
(x-140)÷70=4
0,1(x+6)=3,3×0,4
4(x -5.6)=1.6
7(6.5+x)=87.5
(27.5-3.5)÷x=4
¿Están bien? Espero que puedan ayudarte.