Oblicz równania :D : 1. 8x+5=7x 2. 7n+2=6n-3 3. 17y + 28 = 19y +27 4. 8k- 19 = -8k+19 Proszę szybko :D Daje najj
1. 8x+5=7x
8x-7x=-5
x=-5
2.7n+2=6n-3
7n-6n=-3-2
n=-5
3.17y+28=19y+27
17y-19y=27-28
-2y=-1 /:(-2)
y=0,5
4.8k-19=-8k+19
8k+8k=19+19
16k=38 /:16
k=2,375
ŁATWE :D
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1. 8x+5=7x
8x-7x=-5
x=-5
2.7n+2=6n-3
7n-6n=-3-2
n=-5
3.17y+28=19y+27
17y-19y=27-28
-2y=-1 /:(-2)
y=0,5
4.8k-19=-8k+19
8k+8k=19+19
16k=38 /:16
k=2,375
ŁATWE :D