Question

Rezolva in multimea numerelor rationale ecuatiile:

a) x + 17 = 12

b) 3x - 5 = 22

c) 5x + 4 = 7x + 1

d) 2(x-3) + 1 = 5 - 4 (x-2)

e) $\frac{x}{3}$ - $\frac{x-3}{4}$ = $\frac{x+1}{6}$

f) $\frac{2}{5}$ ⋅ ($\frac{5}{4} x$ - $\frac{5}{6}$) = 3x - $\frac{1}{6}$

g) 0,(3)x + 1,5 = 1

h) 3 + |2x - 1| = 5

Va rog frumos ajutati-ma!!
Dau coronita!

Answer 1

a)X+17=12
X=12-17
X= -5

B) 3x-5=22
3x=22+5
3x=27
X=27/3
X=9

C) 5x+4=7x+1
5x-7x=1-4
-2x=-3
X=3/2

D) 2(x-3)+1=5-4(x-2)
2x-6+1=5-4x+8
2x-4x=5+8+6-1
-2x=18
X= -18/2
X= -9

G) 0,(3)x +1,5=1
0,(3)x= 1-1,5
0,(3)x= -0,5
X= -0,5/0,(3)

H) 3+|2x-1|=5
3+2x-1=5
2x=5-3+1
2x=3
X=3/2