Explicație pas cu pas:
1. a) 2x(-10)+10=-20+10=-10
b) 3x(-11)+22:(-2)=-33-11=-44
c) 3+(-5)² - (-20):(-4)=3-25-5=-27
d) - 4[-7+(-3²+6)x(-2)]=-4[-7+(-9+6)x(-2)]=-4[-7+(-3)x(-2)]=-4(-7+6)=-4(-1)=4
2. a) - 5x(-6)+(-20)=30-20=10
b) 99-(-5)x(-19)=99-95=4
c) - 10x(12)+(-7)x(-15)=-120+105=225
d) - 2x(3)x(-4)-(-4)x(-3)x(-2)=-6x(-4)-(-4)x(-3)x(-2)=
=24-(-4)x(-3)x(-2)=24-12x(-2)=24+24=48
e) (-2+3-44)x(7-5+8)=-43x10=-430
f) - 100x[(-4)x(5)-(-10)x(2)-(-3)]=-100x(-20+20+3)
=-100x3=-300
