Question

3)Rezolvati in multimea Q ecuatile:
a)x-9=0 b)x-5/6=0 c)x-1=1/2 d)x-7/11=2/3
e)x+5/4=2 f)x+2/9=20/9 g)x+2=15/6 h)x+2/3=3/2


/ inseamna supra
MULTUMESC ANTICIPAT

Answer 1

A) x-9=0
x=9

B) x- $\frac{5}{6}$=0

x= $\frac{5}{6}$

C) x-1= $\frac{1}{2}$

x= $\frac{1}{2}$+1(aducem la același numitor)

x= $\frac{1+2}{2}$

x= $\frac{3}{2}$

D) x- $\frac{7}{11}$= $\frac{2}{3}$

x= $\frac{2}{3}$+ $\frac{7}{11}$ (aducem la același numitor)

x= $\frac{22+21}{33}$

x= $\frac{43}{33}$

E) x+ $\frac{5}{4}$=2

x=2- $\frac{5}{4}$ (aducem la același numitor)

x= $\frac{8-5}{4}$

x= $\frac{3}{4}$

F) x+ $\frac{2}{9}$= $\frac{20}{9}$

x= $\frac{20}{9}$- $\frac{2}{9}$

x= $\frac{18}{9}$=2

G) x+2= $\frac{15}{6}$

x= $\frac{15}{6}$-2 (aducem la același numitor)

x= $\frac{15-12}{6}$

x= $\frac{3}{6}$ (facem simplificarea)

x= $\frac{1}{2}$

H) x+$\frac{2}{3}$= $\frac{3}{2}$

x= $\frac{3}{2}$- $\frac{2}{3}$ (aducem la același numitor)

x= $\frac{9-4}{6}$

x= $\frac{5}{6}$