Question

Determine o valor de cada □. a)□+(-8)-(-3)=+7 b)(+8)-(-□)+(-3)= -5 c)(+48)-(-36)+(-40)-(+□)= -75

Answer 1

a)□+(-8)-(-3)=+7  ==>  x - 8+3 = 7 ==> x = 7 + 5 ==> x = 12

b)(+8)-(-□)+(-3)= -5 ==> 8 + x - 3 = - 5 ==> x = - 5 -8+3 ==> x = - 10

c)(+48)-(-36)+(-40)-(+□)= -75 ==>48+36-40-x = - 75 ==> x = 44+75 ==> x=119

Answer 2

A) +12+(-8)-(-3)=7 B) (+8)-(-10)+(-3)=-5 C) (+48)-(-36)+(-40)-(+119)=-75