Question

Aflati x:
a)2/3 + (x+1)/2=5/1-(4-x)/6
b)6x/5 -x/1=x/3+8x
c)0,(6)x+2-0,(3)=4-2(x+1)+ 3,(6)
d)37/3:{[11/4:(5/3+15x/8)]*8/11+5/3}=5

Answer 1

a)2/3 + (x+1)/2=5/1-(4-x)/6
aducem la acelasi numitor (6 in acest caz), apoi eliminam numitorul
2×3+3×(x+1)=5×6 -(4-x)
6+3×x+3×1=30-4+x⇒  6+3x+3=26+x    separam termenii cu necunoscuta⇒ 3x-x=26-6-3  2x=15 ⇒ x=15/2