Question

Zad.1
x-1i1/2-1/3x=2+1/4x-5/6


zad.2
5/7-2i1/4x-1i1/2=2/7x-2

zad.3
1/5x-2/3+1i1/2=1/10x-3/5-2/3x

zad.4
2x-3/4-1i1/5x=2/5-1/10


potzrebne na jutro

Answer 1

Zad.1
x-1i1/2-1/3x=2+1/4x-5/6
sprowadzasz do wspólnego mianownika 12
12/12x -18/12-4/12x=24/12+3/12x-10/12
12/12x-4/12x-3/12x=24/12+18/12-10/12
5/12x=32/12
x=32/12 * 12/5
x=32/5
x=6 2/5


zad.2
5/7-2i1/4x-1i1/2=2/7x-2
do mianownika wspólnego 28
20/28-63/28x-42/28=8/28x-56/28
-63/28x-8/28x=-56/28-20/28+42/28
-71/28x= -34/28
x=-34/28 * - 28/71
x=34/71


zad.3
1/5x-2/3+1i1/2=1/10x-3/5-2/3x
do mianownika wspólnego 30
6/30x-20/30+45/30=3/30x-18/30-20/30x
6/30x-3/30x+20/30x= -18/30+20/30-45/30
23/30x= -43/30
x= -43/30 * 30/23
x= - 43/23
x= - 1 20/23


zad.4
2x-3/4-1i1/5x=2/5-1/10
2x-0,75-1,2x=0,4-0,1
0,8x=0,4-0,1+0,75
0,8x=1,05
x= 1,3125