Question

Afla termenul necunoscut.Dau coroana! Repede
a+867:3=587
695:a+130=35
a-236x3=292
332x3-a=599
436x2-a=297
900+2-a x 100=302
a x (57-13 x 4)= 40
(m-416:4+2)=1980
(795:5-154)x a =715
(774-a)-258=220
(9191-a)+687=2000
a +30 x 9=500
36:a +63 :9):2=8
6xa-6=30-2x3
a-(558:9+30x15)=142
924-(150+a)=100+2x100
40xa-500=300
360-(2xa+64)=278

Answer 1

a+867:3=587
a + 289 = 587
a = 587-289
a = 298

695:a+130=135
695:a = 135-130
695:a = 5
a = 695:5
a=139

a-236x3=292
a-708=292
a=292+708
a=1000

332x3-a=599
996-a=599
a=996-599
a=397

436x2-a=297
872-a = 297
a=872-297
a=575

900+2-a x 100=302
902-ax100=302
ax100-902-302
ax100=600
a=600:100
a=6

a x (57-13 x 4)= 40
a x (57-52)=40
a x 5 = 40
a=40:5
a=8

(m-416:4+2)=1980
m-104+2=1980
m-104=1980-2
m-104=1978
m=1978+104
m=2082

(795:5-154)x a =715
(159-154) x a = 715
5 x a = 715
a = 715:5
a=143

(774-a)-258=220
774-a = 220+258
774-a = 478
a = 774-478
a = 296

(9191-a)+687=2000
9191-a = 2000-687
9191-a=1313
a=9191-1313
a=7878

a +30 x 9=500
a+270=500
a=500-270
a=230

(36:a +63 :9):2=8
(36:a+7):2=8
36:a+7 = 8x2
36:a+7 = 16
36:a=16-7
36:a=9
a=36:9
a=4

6xa-6=30-2x3
6 x a - 6 = 30 - 6
6 x a - 6 = 24
6 x a = 24+6
6 x a = 30
a = 30:6
a=5

a-(558:9+30x15)=142
a-(62+45)=142
a-107=142
a=142+107
a=249

924-(150+a)=100+2x100
924-(150+a) = 100+200
924-(150+a)=300
150+a = 924-300
150+a=624
a=624-150
a=474

40xa-500=300
40 x a = 300+500
40 x a = 800
a = 800:40
a=20

360-(2xa+64)=278
2 x a +64 = 360-278
2 x a + 64 = 82
2 x a = 82-64
2 x a = 18
a = 18:2
a=9