Răspuns:
a) 4x(6+9)=4x6+9=24+9=33
5x(7-3)=5x7-3=35-3=32
b)(6+8)x7=6+8x7=6+56\62
(10-2)x9=10-2x9=10-18=-8
c)3x(7+8+5)=3x7+8+5=21+8+5=29+5=34
(2+6+9)x4=2+6+9x4=8+36=44
d)2x(8-3-2)=2x8-3-2=16-3-2=13-2=11
(10-5-3)x6=10-5-3x6=5-18=-13
e)9x(8+4-7)=9x8+4-7=72+4-7=76-7=69
(5-2+9)x3=5-2+9x3=3+27=30
Explicație pas cu pas:
