(8.25*-10)*(:-6.15)+12.7:()=-1.68
1)8.25*-10=-10=-10=7,5-10=-2,5
2):-6.15=:-6.15=*-6.15=-6.15=-6.15=5.25-6.15=-0.9
3)-2.5*(-0.9)=3.4
4)12.7:(=12.7:(-2.5)=-5.08
5)3.4+(-5.08)=-1.68
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(8.25*-10)*(:-6.15)+12.7:()=-1.68
1)8.25*-10=-10=-10=7,5-10=-2,5
2):-6.15=:-6.15=*-6.15=-6.15=-6.15=5.25-6.15=-0.9
3)-2.5*(-0.9)=3.4
4)12.7:(=12.7:(-2.5)=-5.08
5)3.4+(-5.08)=-1.68