(-0.125)*(-3/5)*(-8)*1又2/3*(-5)

(-0.125)*(-3/5)*(-8)*1又2/3*(-5)
(-0.125)*(-3/5)*(-8)*1又2/3*(-5)

(-0.125)*(-3/5)*(-8)*1又2/3*(-5)
（1+1/4)x-60
5/4x=60
x=60÷5/4
x=48
即a+b=0
cd=1
x=±2
所以原式=4+(0+1)x+0-1
=3+x
=3-2=1或3+2=5

=（0.125*8）*(3/5*5)*1又2/3
=1*3*5/3
=5