Question

1. Află numărul necunoscut: 9x4:a=6 c: 5 x 4 = 8 m: (2 x 4) = 14:2 (13 + r): 8 = 7 6×4:b=8 dx 3:6= 4 n: (3 x 3) = 6 x 4 33 - px 4 = 13
prin metoda mersului invers
vă rog frumos dau coroană​

Answer 1

Răspuns:

9 × 4 : a = 6

36 : a = 6

a = 36 : 6

a = 9

c : 5 × 4 = 8

c : 20 = 8

c = 8 × 20

c = 160

m : ( 2 × 4 ) = 14 : 2

m : 8 = 7

m = 7 × 8

m = 56

( 13 + r ) : 8 = 7

13 + r = 7 × 8

13 + r = 56

r = 56 - 13

r = 43

6 × 4 : b = 8

24 : b = 8

b = 24 : 8

b = 3

d × 3 : 6 = 4

d × 3 = 4 × 6

d × 3 = 24

d = 24 : 3

d = 8

n : ( 3 × 3 ) = 6 × 4

n : 9 = 24

n = 24 × 9

n = 216

33 - p × 4 = 13

33 - 13 = p × 4

20 = p × 4

p = 20 : 4

p = 5