Question

(20 x 203 - x): 4 = 7
(36×149-5316):x=6
x-(81×27+63÷9)+7×3=2827
8000-(65×39+42÷6)+y×4=5482
7000-(49×62+36÷6)+4×y=3984
y-(2500-72÷9÷2)=3504
4000-(y-64÷8÷4)=102
Dau coroană și cinci stele!​

Answer 1

(20 x 203 - x): 4 = 7

(4.060-x):4=7 /4

4.060-x=28

x=4.060-28

x=4.032

(36×149-5316):x=6

(5.364-5316):x=6

48:x=6

x=48:6

x=8

x-(81×27+63÷9)+7×3=2827

x-(2.187+7)+21=827

x-2194+21=827

x=2194-21+827

x=2173+827

x=3000

8000-(65×39+42÷6)+y×4=5482

8000-(2.535+7)+y×4=5482

8000-2542+y×4=5482

5.458+y×4=5482

y×4=5482-5458

y×4=24 /÷4

y=6

7000-(49×62+36÷6)+4×y=3984

7000-(3.038+6)+4×y=3984

7000-3044+4×y=3984

3.956+4×y=3984

4×y=3984-3956

4×y=28 /÷4

y=7

y-(2500-72÷9÷2)=3504

y-(2500-8÷2)=3504

y-(2500-4)=3504

y-2496=3504 /+2496

y=6000

4000-(y-64÷8÷4)=102

4000-(y-8÷4)=102

4000-(y-2)=102

4000-y+2=102

4002-y=102

y=4002-102

y=3900