WYRAŻENIA ALGEBRAICZNE
DAJE NAJ, TYLKO SZYBKO !! :)
Zadanie 1 : Rozwiąż równania:
a) a : 2 i 2/3=2 i 1/4
b)2z+7/10=2 i 1/5
c)4x-5 i 1/3=20 i 2/3
d) 3/4y+5 i 1/2=6 i 1/8
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a)
a : 2 i 2/3 = 2 i 1/4
a = 2 i 1/4 * 2 i 2/3
a = 9/4 * 8/3
a = 6
b)
2z + 7/10 = 2 i 1/5
2z = 2,2 - 0,7
2z = 1,5/:2
z = 0,75
c)
4x - 5 i 1/3 = 20 i 2/3
4x = 20 i 2/3 + 5 i 2/3
4x = 62/3 + 17/3
4x = 79/3 /:4
x = 79/3 * 1/4
x = 79/12
x = 6 i 7/12
d)
3/4y + 5 i 1/2 = 6 i 1/8
3/4y = 6 i 1/8 - 5 i 1/2
3/4y = 49/8 - 11/2
3/4y = 49/8 - 44/8
3/4y = 5/8 /: 3/4
y = 5/8 * 4/3
y = 5/6