Explicație pas cu pas:
6x(10-2)=6x8=48
(6x10)-(6x2)=60-12=48
4x(8-2)=4x6=24
(4x8)-(4x2)=32-8=24
5x(9-3)=5x6=30
(5x9)-(5x3)=45-15=30
3x(7+2)=3x9=27
(3x7)+(3x2)=21+6=27
9x(6+2)=9x8=72
(9x6)+(9x2)=54+18=72
3x(9-6)=3x3=9
(3x9)-(3x6)=27-18=9
6x7-6x3=42-18=24
6x(7-3)=6x4=24
5x7+3x7=35+21=56
7x(5+3)=7x8=56
6x10+9x10=60+90=150
10x(6+9)=10x15=150