1)Rezolvati in Q,ecuatiile:
a)
b)
c)
d)![\frac{1}{7} [x-0,(23)]= \frac{5}{14} \frac{1}{7} [x-0,(23)]= \frac{5}{14}](https://tex.z-dn.net/?f=+%5Cfrac%7B1%7D%7B7%7D+%5Bx-0%2C%2823%29%5D%3D+%5Cfrac%7B5%7D%7B14%7D+)
e)![3,75[x-0,(3)]= \frac{5}{14} 3,75[x-0,(3)]= \frac{5}{14}](https://tex.z-dn.net/?f=3%2C75%5Bx-0%2C%283%29%5D%3D+%5Cfrac%7B5%7D%7B14%7D+)
f)
g)![\frac{5}{7} [4x-0,6(3)]= \frac{10}{21} \frac{5}{7} [4x-0,6(3)]= \frac{10}{21}](https://tex.z-dn.net/?f=+%5Cfrac%7B5%7D%7B7%7D+%5B4x-0%2C6%283%29%5D%3D+%5Cfrac%7B10%7D%7B21%7D+)
2)Rezolvati in Q ecuatiile:
a)
b)
c)
d)2x+8=x+15
e)0,(8)+3x=2x+6
f)3x+6,(2)=x+11,(4).
Va rog repede!!
andreutzakriss:
scz...nu stiu...
Răspunsuri la întrebare
Răspuns de
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33/5x+1=2x+9/4⇒
18x/5+1=2x+9/4⇒
18x+5/5=8x+9/4⇒
5(8x+9)=4(18x+5)⇒
40x+45=72x+20⇒
40x-72x=-45+20⇒
-32x=-25⇒
x=-25/-35
4/3x-1=x+5.3⇒
4x-3/3=x+53/10⇒
4x-3/3=10x+53/10⇒
3(10x+53)=10(4x-3)⇒
30x+159=40x-30⇒
30x-40x=-159-30⇒
-10x=-189⇒
x=-189/-10⇒x=18.9
2x+8=x+15⇒2x-x=15-8⇒x=7
18x/5+1=2x+9/4⇒
18x+5/5=8x+9/4⇒
5(8x+9)=4(18x+5)⇒
40x+45=72x+20⇒
40x-72x=-45+20⇒
-32x=-25⇒
x=-25/-35
4/3x-1=x+5.3⇒
4x-3/3=x+53/10⇒
4x-3/3=10x+53/10⇒
3(10x+53)=10(4x-3)⇒
30x+159=40x-30⇒
30x-40x=-159-30⇒
-10x=-189⇒
x=-189/-10⇒x=18.9
2x+8=x+15⇒2x-x=15-8⇒x=7
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