Răspuns :
Explicație pas cu pas:
7×6-12+7×10=42-12+70
=30+70
=100
15-15:3+2×5×5=15-5+50
=10+50
=60
1. Calculați
b) 7 × 6 - 12 + 7 × 10 <=>
<=> 42 - 12 + 70 <=>
<=> 30 + 70 <=>
<=> 100
15 - 15 ÷ 3 + 2 × 5 × 5 <=>
<=> 15 - 5 + 10 × 5 <=>
<=> 15 - 5 + 50 <=>
<=> 10 + 50 <=>
<=> 60