Question

afla necunoscută a) 6×6+a=4×10 b)9:b+6=3×3 c)c:2:4+12=4×4 d)d×3×7+7=7×10​

Answer 1

Salut!

1. Află necunoscută:

a) 6x6+a=4x10

36+a=40

a=40-36

a=4

36+4=40

b) 9:b+6=3x3

9:b+6=9

b=9-6

b=3

3+6=9

c) c:2:4+12=4x4

c:2:4+12=16

c=16x2

c=32

4+12=16

Spor la teme!

Answer 2

Răspuns:

a ) 6 × 6 + a = 4 × 10

6 × 6 + a = 40

36 + a = 40

a = 40 - 36

a = 4

b) 9 : b + 6 = 3 × 3

9 : b + 6 = 9

9 : b = 9 - 6

9 : b = 3

b = 9 : 3

b = 3

c) c : 2 : 4 + 12 = 4 × 4

c : 2 : 4 + 12 = 16

c : 2 : 4 = 16 - 12

c : 2 : 4 = 4

c : 2 = 4 × 4

c : 2 = 16

c = 16 × 2

c = 32

d) d × 3 × 7 + 7 = 7 × 10

d × 3 × 7 + 7 = 70

d × 3 × 7 = 70 - 7

d × 3 × 7 = 63

d × 3 = 63 : 7

d × 3 = 9

d = 9 : 3

d = 3