Question

Elimn lo penteis y calcula a) -6+5-(-4)+3 b)2-5-(2-7)-(5+6) c)3-7+(-9-3)-(1-2) d) -(5-2)+(4-6)-(8+2)

Answer 1

a) -6+5-(4)+3
-6+5+4+3=6

b) 2-5-(2-7)-(5+6)
2-5+5-11 = -9

c) 3-7+(9-3)-(1-2)
3-7+6+1=3

d)-(5-2)+(4-6)-(8+2)
-3-2-10= -15