Treść w zadaniu 2 na załączonym obrazku.
x-serduszka kasi
1/2x+1/4x+1/7x+3=x
14/28x+7/28x+4/28x+3=x
25/28x+3=x
25/28x-x=-3
-3/28x=-3 |:(-3/28)
x=-3 *(-28/3)
x=28
y- serduszka kasi
1/3y+1/5y+1/6y+9=y
10/30y+6/30y+5/30+9=y
21/30y+9=y
21/30y-y=-9
-9/30y=-9 |: (-9/30)
y=-9 * (-30/9)
y=30
te ukośniki oznaczają ułamk:)
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x-serduszka kasi
1/2x+1/4x+1/7x+3=x
14/28x+7/28x+4/28x+3=x
25/28x+3=x
25/28x-x=-3
-3/28x=-3 |:(-3/28)
x=-3 *(-28/3)
x=28
y- serduszka kasi
1/3y+1/5y+1/6y+9=y
10/30y+6/30y+5/30+9=y
21/30y+9=y
21/30y-y=-9
-9/30y=-9 |: (-9/30)
y=-9 * (-30/9)
y=30
te ukośniki oznaczają ułamk:)