Oblicz wartość liczbową wyrażenia:
(-3,6x + y -2)+ 2(x- 3,5y - 1,2)-(6y + 1,4x - 3,4)
x=1/2 y=1/3
(-3,6x+y-2)+2(x-3,5y-1,2)-(6y+1,4x-3,4)=
=(-1,8+1/3-2)+(1-7/3-2,4)-(2+0,7-3,4)=
=-1,8+1/3-2+1-7/3-2,4-2-0,7+3,4=-6,5
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(-3,6x+y-2)+2(x-3,5y-1,2)-(6y+1,4x-3,4)=
=(-1,8+1/3-2)+(1-7/3-2,4)-(2+0,7-3,4)=
=-1,8+1/3-2+1-7/3-2,4-2-0,7+3,4=-6,5