Question

Rezolvati urmatoarele ecuatii unde xeste fractia zecimala x+2=11.5 b) x-5,31=20 c) 14-x=7,56 d) 8,41+x=49,41 e) 3 ori 1,76+x=12,12 f) 39,39:13+x=44,29 Dau 5 coronite

Answer 1

a)x+2=11,5
x=11,5-2
x=9,5
b)x-5,31=20
x=20+5,31
x=25,31
c)14-x=7,56
-x=7,56-14
-x=-7,56 |×(-1)
x=7,56
d)8,41+x=49,41
x=49,41-8,41
x=41
e)3×1,76+x=12,12
5,28+x=12,12
x=12,12-5,28
x=6,84
f)39,39:13+x=44,29
3,03+x=44,29
x=44,29-3,03
x=41,26