Question

Porfavor necesito ayuda alguien me puede ayudar.
1.(+4)(+4)(-2)(-4)=
2.(7)(+2.3)(-3)=
3.(0.5)(-10)(-3)=
4.(5)(-2)(-10)(-3)=
5.(5/3)(2/4)(-2/4)=
6.(26)÷(-2)=
7.(-400)÷(-2.5)=
8.(-250)÷(-5)=
9.(20)÷(-2.5)=
10.(-1/7)÷(-5/4)=
11.(+2)(+3)(-5)(+4)=
12.(10)(+2.5)(-1)(-2)=
13.(1/3)(-1/3)(-2/4)=
14.(50)(-20)(-102)(-100)(0)=
15.(5/3)(2/5)(-2/6)=
16.(2/6)÷(-2/4)=
17.(-4/10)÷(-2/5)=
18.(-2.50)÷(0.5)=
19.(2/40)÷(-2.10)=
20.(-1.5)÷(-4)=
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Answer 1

Usa la calculadora científica