Question

dau corona si 5 stele​

Answer 1

Răspuns:

• 4x(3+9) = 4x12 = 48

• 4x(3+9) = 4x3 + 4x9 = 12 +36 = 48

•(18-3)x7 = 15x7 = 105

•(18-3)x7 = 18x7 - 3x7 = 126 - 21 = 105

•3x(4+2)x5 = 3x6x5 = 18x5 = 90

•3x(4+2)x5 =

Answer 2

Răspuns:

Explicație pas cu pas:

1

a)4×(3+9)=4×12=48

b)4×(3+9)=4×3+4×9=12+36=49

2

a)(18-3)×7=18×7-3×7=126-21=105

b) (18-3)×7=15×7=105

3

a)3×(4+2)×5=(12+6)×5=60+30=90

b)3×5×(4+2)=15×6=90