Question

Va rog faceti aceste ex.Repedeeee

Answer 1

Răspuns:

a) x×7=4×21

x×7=84

x=84:7

x=12

b) x×28=32×7

x×28=224

x=224:28

x=8

c) (x+1)×7=10×14

(x+1)×7=140

x+1=140:7

x+1=20

x=20-1

x=19

d) (2x+1)×3=15×27

(2x+1)×3=405

2x+1=405:3

2x+1=135

2x=135-1

2x=134

x=134:2

x=67

Sper ca te-am ajutat!