Question

194x3+200-a=493; ,(104x4+83x5)-ax3=8x100+36:9; (138x5-21:7-300x2)-9x9-rx2=2;(9x9-6x6-a)+(13+28:4)=5x10+3 ; (6 x4:3+c):7=16:4;24:4x(100:10)+5x8-6:6<90:3:3+3x7 ; (14+15+16):(19-14)>(1+2x3x4):(6-6:6).

Answer 1

194x3+200-a=493
582+200-a=493
782-a=493
a=782-493
a=289

(104x4+83x5)-ax3=8x100+36:9
(416+415)-ax3=800+4
831-ax3=804
ax3=831-804
ax3=27
a=27:3
a=9

(138x5-21:7-300x2)-9x9-rx2=2
(690-3-600)-81-rx2=2
87-81-rx2=2
6-rx2=2
rx2=6-2
rx2=4
r=2

(9x9-6x6-a)+(13+28:4)=5x10+3
(81-36-a)+(13+7)=50+3
45-a+20=53
65-a=53
a=65-53
a=12

(6 x4:3+c):7=16:4
(8+c):7=4
8+c=4x7
c=28-8
c=20

24:4x(100:10)+5x8-6:6<90:3:3+3x7
6x10+40-1<10+21
60+40-1<31
99<31  fals

(14+15+16):(19-14)>(1+2x3x4):(6-6:6)
45:5>(1+24):(6-1)
9>25:5
9>5 adevarat