Rozwiąż równania :
x/2+7x/5-5/2=1,3
-1+3x/4=0,8x-x
(X/2+7x/5-5/2)*10=1,3*10
5x+14x-2=13
5x-14x=13+25
9x=38/:9
x=4,2
(-1+3x)*4=(0,8-x)*4
-3+12x=3,2-4x
12x+4x=3,2+3
16x=6,2/:16
x=0,3875
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(X/2+7x/5-5/2)*10=1,3*10
5x+14x-2=13
5x-14x=13+25
9x=38/:9
x=4,2
(-1+3x)*4=(0,8-x)*4
-3+12x=3,2-4x
12x+4x=3,2+3
16x=6,2/:16
x=0,3875