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1)Rezolvati in Q,ecuatiile:

a)[tex]a)0,5(x+ \frac{2}{9} )=0.75[/tex]
b)[tex] \frac{3}{5} (x- \frac{1}{2})=6 [/tex]
c)[tex]0,(2)* (x-1)= \frac{1}{4} [/tex]
d)[tex] \frac{1}{7} [x-0,(23)]= \frac{5}{14} [/tex]
e)[tex]3,75[x-0,(3)]= \frac{5}{14} [/tex]
f)[tex]1,(3)*(3x-0,75)= \frac{1}{3} [/tex]
g)[tex] \frac{5}{7} [4x-0,6(3)]= \frac{10}{21} [/tex]

2)Rezolvati in Q ecuatiile:

a)[tex]3 \frac{3}{5}x+1=2x+ \frac{9}{4} [/tex]
b)[tex] \frac{4}{3} x+1=x+5,3[/tex]
c)[tex]1 \frac{1}{9}x+0,5=x+6,7 [/tex]
d)2x+8=x+15
e)0,(8)+3x=2x+6
f)3x+6,(2)=x+11,(4).

Va rog repede!!

Răspuns :

Nitugheorghe57
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


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