Przekształć iloczyny w sumy :
a)(-6z+5t)*(-10)
b) 3/5 (a+b)
c)-7(1/7p+2/7r)
d)(a/3 - b/6) * (-12)
a)(-6z+5t)*(-10)=60z-50t
b) 3/5 (a+b)= 3/5a+3/5b
c)-7(1/7p+2/7r)=-p-2r
d)(a/3 - b/6) * (-12)=-4a+2b
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a)(-6z+5t)*(-10)=60z-50t
b) 3/5 (a+b)= 3/5a+3/5b
c)-7(1/7p+2/7r)=-p-2r
d)(a/3 - b/6) * (-12)=-4a+2b