Question

Alfa numărul necunoscut din expresiile 36-42:e:15:3-4:1-20=10
11-7x5-9x9:f:3:8=7
22-5x38-4x4g=12
26+6xh-7x3:9=27

Answer 1

Răspuns:

36-42÷e÷5-4-20=10

36-42/e×1/5-4=10+20

36-42/5e-4=30

36-42/5e=30+4

36-42/5e=34

42/5e=36-34

42/5e=2

5e=42/2

5e=21

e=21/5

e=4,2

11-35-81÷f÷3÷8=7

11-35-81÷f÷3=7×8

11-35-81÷f÷3=56

11-35-81÷f=56×3

11-35-81÷f=168

81/f=168-11-35

81/f=122

f=81/122

22-190-16g=12

190-16g=22-12

190-16g=10

16g=190-10

16g=180

g=180÷16

g=11,25

26+6h-21/9=27

26+6h=⁹27+21/9

26+6h=264/9

6h=264/9-⁹26

6h=264/9-234/9

6h=30/9

h=30/9×1/6

h=5/9