Respostas
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a)(3+2)x(5-1)+4=
5x4+4=
20+4= 24
b)82-8x7:(4-1x3)
82-8x7:(4-3)
82-8x7:1
82-56= 26
c) 25[10-(2x3+1)
25- [10-(6+1)]
25-[10-7]
25-3= 22
d)70-[12+(5x2-1)+6]
70-[12+(10-1)+6]
70-[12+9+6]
70-27= 43
e)8:2 [15-(4x2+1)]
8:2+[15-(8+1)]
8:2+[15-9]
8:2+6
4+6= 10
f) 9+[4+2x(6-4)+(2+5)]- 8
9+[4+2x2+7]-8
9+[4+4+7]-8
9+[8+7]-8
9+15-8
24-8 = 16
g)50+{10-2x[(6+4:2)-(10-3)]}
50+{10-2x[(6+2)- 7]}
50+{10-2x[8-7]}
50+{10-2x1}
50+{10-2}
50+8= 58
h)180:{10+2x[20-45:(13-2x5)]}
180:{10+2x[20-45:(13-10)]}
180:{10+2x[20-45:3]}
180:{10+2x[20-15]}
180:{10+2x5}
180:{10+10}
180:20 = 9
5x4+4=
20+4= 24
b)82-8x7:(4-1x3)
82-8x7:(4-3)
82-8x7:1
82-56= 26
c) 25[10-(2x3+1)
25- [10-(6+1)]
25-[10-7]
25-3= 22
d)70-[12+(5x2-1)+6]
70-[12+(10-1)+6]
70-[12+9+6]
70-27= 43
e)8:2 [15-(4x2+1)]
8:2+[15-(8+1)]
8:2+[15-9]
8:2+6
4+6= 10
f) 9+[4+2x(6-4)+(2+5)]- 8
9+[4+2x2+7]-8
9+[4+4+7]-8
9+[8+7]-8
9+15-8
24-8 = 16
g)50+{10-2x[(6+4:2)-(10-3)]}
50+{10-2x[(6+2)- 7]}
50+{10-2x[8-7]}
50+{10-2x1}
50+{10-2}
50+8= 58
h)180:{10+2x[20-45:(13-2x5)]}
180:{10+2x[20-45:(13-10)]}
180:{10+2x[20-45:3]}
180:{10+2x[20-15]}
180:{10+2x5}
180:{10+10}
180:20 = 9
re12345p:
ah, vou editar..
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