Question

helppp
este cu mersul învers
1)[(x:1):100+90]:10-10=0
2)[(x-416:4+2 )-5+3]×10=2000
3)[(x+428:4)×2+5]×2-186=800
4)1×2×3×a=24
5)a:8+200000=200003
6)(4×a+5)-6×2=5
7)(a-387:9):3=2185-1879
8)(24+24:4)×5×2:a=300:100
9)(a-933:3+300)×2=978
10)[x (600834-11557)]:100=962
Ajutatima va rog
se face toată problema plz ajutatima
ofer coroana la cel mai bun asa
este cu mersul invers

Answer 1

1) [(x:1):100+90]:10-10=0
[(x:1):100+90]:10=0+10
[(x:1):100+90]:10=10
[(x:1):100+90]=10x10
[(x:1):100+90]=100
(x:1):100=100-90
(x:1):100=10
x:1=10x1000
x:1=10000
x=10000x1
x=10000

2) [(x-416:4+2)-5+3]x10=2000
[(x-104+2)-5+3]=2000:10
(x-104+2)-5+3=200
(x-104+2)-5=200-3
(x-104+2)-5=197
x-104+2=197+5
x-104+2=202
x-104=202-2
x-104=200
x=200-104
x=96

3) [(x+428:4)x 2+5]x 2-186=800
[(x+107)x 2+5]x 2-186=800
[(x+107)x 2+5]x 2=800-186
[(x+107)x 2+5]x 2=614
[(x+107)x 2+5]=614:2
(x+107)x 2+5=307
(x+107)x 2=307-5
(x+107)x 2=302
x+107=302:2
x+107=151
x=151-107
x=44

4) 1x2x3xa=24
ax1x2x3=24
ax1x2=24:3
ax1x2=8
ax1=8:2
ax1=4
a=4:1
a=4

5) a:8+200000=200003
a:8=200003-200000
a:8=3
a=3x8
a=24

6) (4xa+5)-6x2=5
(4xa+5)-12=5
(4x1+5)=5+12
4xa+5=17
4xa=17-5
4xa=12
a=12:4
a=3

7) (a-387:9):3=2185-1879
(a-43):3=306
a-43=306:3
a-43=102
a=102+43
a=145

8) (24+24:4)x5x2:a=300:100
(24+6)x5x2:a=3
30x5x2:a=3
150x2:a=3
a:300=3
a=300x3
a=900

9) (a-933:3+300)x 2=978
(a-311+300)x 2=978
a-311+300=978:2
a-311+300=489
a-311=489-300
a-311=189
a=189+311
a=500

10) [x(600834-11557)]:100=962
[x(589277)]:100=962
589277x:100=962
589277x=962x100
589277x=96200
x=589277:96200
x=6,12

Sper ca te am ajutat! Imi pare rau pentru ex 10, dar nu mi a iesit.