Question

Rezolvati ecuatiile in multimea numerelor rationale pozitive
a) 4x=3
b) 10x=5
c) 2x=8 supra 3
d) 12 supra 5 x=6
e) 5 supra 7 x= 5 supra 3
f) 3,5 x= 0,7
g) 3,6 x= 0,12
h) x:3 1 supra 2=8 supra 12

Answer 1

a)4x=3
x=3/4
b)10x=5
x=5/10 (simplificam cu 5 ) = 1/2
c)2x=8/3
x=8/3÷2/1=8/3×1/2=8/6 (splf cu 2)=4/3
d)12/5x=6
x=6÷12/5
x=6×5/12
x=30/12 (splf cu 6)=5/2
e)5/7x=5/3
x=5/3÷5/7
x=5/3×7/5
x=35/15 (splf cu 5
x=7/3
f)3,5 x=0,7
x=0,7÷3,5
x=7/10÷35/10
x=7/10×10/35
x=70/350=1/5
g)3,6x=0,12
x=0,12÷3,6
x=12/100÷36/10
x=12/100×10/36
x=120/3600=1/30
h)x÷31/2=8/12
x=8/12×31/2
×=248/24(splf cu 2 ) =124/12(splf cu 4)=31/3
Sper ca te-am ajutat :) Succes în continuare! ♡