Question

3.Реши уравнения. a) x (25:5)= 350 e k+ 120 : 4 = 150 6) (40-3): x=6 25:5 x=450 B)x: (152)=3 B)(50-2) = 500 c​

Answer 1

Ответ:

Х×(25:5)=350

5х=350

х=350:5

х=70

r+120:4=150

r+30=150

r=150-30

r=120

(40×3):x=6

120:х=6

х=120:6

х=20

25:5×x=450

5х=450

х=450:5

х=90

x:(15×2)=3

х:30=3

х=3*30

х=90

c×(50×2)=500

100с=500

с=500:100

с=5