(-0.125)*(-3/5)*(-8)*1又2/3*(-5)
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![(-0.125)*(-3/5)*(-8)*1又2/3*(-5)](/uploads/image/z/14322629-29-9.jpg?t=%28-0.125%29%2A%28-3%2F5%29%2A%28-8%29%2A1%E5%8F%882%2F3%2A%28-5%29)
(-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