1. (-5/12-9/12):7/3+16/3*0.75=(<span>-14/12*3/7)+400=-2/4+400=-1/2+400=399.5
</span>2.(-4,3*1,4)-32/9*(-9/4)=-6,02+8=1,98
3.(-3,8+7/3)*(-15/8)+25/6:-5/3=−11,49375+(-0,27)~= <span>−11,8</span>
<span>6m-(2m+3/5)+(4m-11/20) =
= 6m - 2m - 3/5 + 4m - 11/20 =
= 8m - 12/20 - 11/20 =
= 8m - 23/20 =
= </span>
<span> </span>
5,36:0,6=53,6:6=8,9333...≈8,93
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1 3дм 2 6дм 1 см 3 51 час 4 51 см 5 5 дм 8 см 6 64 дм