Question

a) 2 x 2 x 2 x a = 8 b) 8:4 x b = 10 c)c: (671 - 111 x 3 x 2) = 70 d) 1 000 - dx 2 - 25 x 4 = 800 e) e-40 : 2 + 29 x 4 = 132 f) f : 7 + 25 = 900 - (300 - 48 x 5 x 9


pls pas cu pas repede​

Answer 1

Explicație pas cu pas:

a) 2 x 2 x 2 x a = 8

a= 1

b) 8:4 x b = 10

2 ×b = 10

b = 5

c)c: (671 - 111 x 3 x 2) = 70

c : (671 - 333×2) = 70

c : ( 671 - 666) = 70

c : 5 = 70

c = 70 × 5 = 350

d) 1 000 - dx 2 - 25 x 4 = 800

1000 - 2d - 100 = 800

1000 - 2d = 800 + 100

1000 - 2d = 900

2d = 1000 - 900

2d = 100

d = 50

e) e-40 : 2 + 29 x 4 = 132

e - 20 + 116 = 132

e - 20 = 132 - 116

e - 20 = 16

e = 16 + 20

e = 36

f) f : 7 + 25 = 900 - (300 - 48 x 5 x 9

f : 7 + 25 = 900 - ( 300 - 240 × 9

Ai uitat să închizi paranteza

Answer 2

Răspuns:

a) 2×2×2×a=8

4×2×a=8

8×a=8

a=8:8

a=1

b) 8:4×b=10

2×b=10

b=10:2

b=5

c) c:(671-111×3×2)=70

c:(671-333×2)=70

c:(671-666)=70

c:5=70

c=70×5

c=350

d) 1000-d×2-25×4=800

1000-d×2-100=800

1000-d×2=800+100

1000-d×2=900

1000-900=d×2

100=d×2

d=100:2

d=50

e) e-40:2+29×4=132

e-20+116=132

e-20=132-116

e-20=16

e = 16 + 20

e= 36