a) -6,2:3,1-(-2,1·10)
b) 2+(-4 ,5)·(-20)
c)2·[3,25- (-3,75)]·3,5 d
)3·(-10)²+ (-3)³
e)(-7)·(-10² )-(07)
f)(-9)·(-8)-5·(-10² )
g)(-2,6):0,26+0,5·8 ²
h)(-0,2)·(-100)-4½ · ⅔
i)(-2,7-3:10)³ · (-1)
j)(-10)·(1,2-5,5)
k) 28,5·(-3,2-0,8)
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a) 19
b)92
c)49
d)273
e)699,3
f)-493
g)-42
h)-\frac{170}{10}