Rozwiąż równania. 1)3x-4=-10 2)1,8x+x=0 3)-5x+30=10 4)-x-21=30 5)1/2s=7 6)-t-20=31 7)0,8w=-1,6 Proszę pomóżcie bardzo ważne!!!!! :D
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1)
3x-4=-10
3x=-6
x=-2
2)
1,8x+x=0
2,8x=0
x=0
3)
-5x+30=10
-5x=-20
x=4
4)
-x-21=30
-x=51
x=-51
5)
1/2s=7
s=14
6)
-t-20=31
-t=51
t=-51
7)
0,8w=-1,6
w=-2
1. 3x-4 = -10 3x = -6 x = -2
2. 1,8x+x = 0 2,8x = 0 x = 0
3. -5x+30 = 10 -5x = -20 x = 4
4. -x-21 = 30 -x = 51 x = -51
5. 1/2s = 7 s = 14
6. -t-20 = 31 -t = 51 t = -51
7. 0,8w = -1,6 w = -2