1.(-10)+8x(-2)²-(-4)x(-3) 2.(-2/3+3/4-5/6)x(-12) 3.(-1/2)+3又1/4+2.75+(-6又1/2)
问题描述：
1.(-10)+8x(-2)²-(-4)x(-3) 2.(-2/3+3/4-5/6)x(-12) 3.(-1/2)+3又1/4+2.75+(-6又1/2)
4.1/3+(-3/4)+(-1/3)+(-1/4)+18/19 5.{-3-(-7)+(-3)}x[-1又3/4÷3又1/2x(-10又1/2)]-5
6.-4/5x[(-1/2)÷(0.75-1)+(-2)] 7.
答
1.(-10)+8x(-2)²-(-4)x(-3) =-10+32-12=102.(-2/3+3/4-5/6)x(-12) =-2/3×12+3/4×12-5/6×12=-8+9-10=-93.(-1/2)+3又1/4+2.75+(-6又1/2)=-1/2+3+1/4+2+3/4-6-1/2=-7+6=-14.1/3+(-3/4)+(-1/3)+(-1/4)+18/19 =1/...