Question

4.Calculati
a)-5-(+3-4)
b)-2x(-3+4)-5x(4-2)

5.Calculati
(-24):(-6)+(-2)x(-3)-(-30):(+5)

9.Calculati
a)(-7)+2-(-5)-(+4)
b)(-12):[(-3)+(-4)+(+5)]-(-18):[(-3+1)+(-4)]




VA ROG!!!!
URGENT!!!!

Answer 1

4/a) -5-3+4 = -4
4/b) 6x-8x-20x+10x = -12x

5) -6 x -9 = -54

9/a) -5 + 5 -4 = -4
9/b) (-12) : (-2) + 18 : -6 = -6 + (-3) = -9