Odpowiedź :
a) 1.5(2-4x)=-3x+6
3-6x=-3x+6/+6x
3=3x+6/-6
-3=3x
x=-1
b) 3.5(2-4x)=-4x+47
7-14x=-4x+47/-7
-14x=-4x+40/+4x
-10x=40/:-10
x=-4
c) 2(3x+5)+x=7+4x
6x+10+x=7+4x
7x+10=7+4x/-4x
3x+10=7/-10
3x=-3
x=-1
a) 1.5(2-4x)=-3x+6
3-6x=-3x+6/+6x
3=3x+6/-6
-3=3x
x=-1
b) 3.5(2-4x)=-4x+47
7-14x=-4x+47/-7
-14x=-4x+40/+4x
-10x=40/:-10
x=-4
c) 2(3x+5)+x=7+4x
6x+10+x=7+4x
7x+10=7+4x/-4x
3x+10=7/-10
3x=-3
x=-1