Question

Transforma in exercitii cu paranteze si rezolva:
model: 3×7+4×7+2×7=(3+4+2)×7=9×7=63
2×9+3×9+1×9=
6×3+6×5+6×2=
4×10-4×2+4×5=

Answer 1

Răspuns:

(2+3+1)×9=6×9=54

(3+5+2)×6= 10×6= 60

(10-2+5)×4=13×4=52

Answer 2

Explicație pas cu pas:

2×9×3×9+1×9=(2+3+1)×9=6×9=54

6×3+6×5+6×2=(3+5+2)×6=10×6=60

4×10-4×2+4×5=(10-2+5)×4=(8+5)×4=13×4=52