2.) {[6 - (-5) × (-4)] + [(-5 + (-10)) ÷3]} =......... 3.) -12 +(-45) = a+ 27,nilai a adalah........ 4.) 3m + (-13) +22 =0, nilai m adalah.... 5.) jika a

2. {(6+20)+[(-15:3)] = (26)+(-5) = 21
3. -57 = a+27, maka -57-27=a, atau a = -87
4. 3m = 13-22=-9, maka m = -9/3=-3
5. a = -14,b = 3, dan c= -5 maka nilai dari
5 ab^ 2 - 3 c ^ 3 = 5(-14x3)^2 - 3(-5)^3
= 5 x (-42)^2-3(-125)
= 5 x 1764 + 375
= 8820 + 375 = 9195

2) {(6-(-5)×(-4)}+{(-5+(-10))÷3} = 6-20+(-15÷3)
= -14 +( -5)
= -19
3) -12+(-45)=-74+27
-12+(-45)=-47

a = -74
4) 3m+9=0
3m=-9
m= -9/3=-3
5) 5.-14.9 - 3.-125
-630 + 375 = -255