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= 6s²+3st+s
b) (16z-2)*3/4=
= (48z-6)/4 =
= 12z - 1,5
c) 1⅓x(0,75+3x)=
= 4/3x(3/4+3x)=
= x + 4x²
d) 2/7a+3/7b=
= (2a+3b)/7
e) -3/4m-3/5n=
= -0,75m-0,6n
b) (16z-2)*3/4=12z-3/2
c) 1cała i jedna trzeciax(0,75+3x)=
=1 1/3x(0,75+3x)=4/3x(0,75+3x)=
=x+4x²