Question

sa se afle x astfel incat5/6x=1intreg1/24;2x/3=6/12;x+2/3=4/5

Answer 1

5/6x=1intreg1/24

5/6x=1×24+1 totul supra /24
5/6x=25/24
6x=5/1 : 25/24
6x=5/1 ×24/25
6x=1×24 totul supra /1×5
6x=24/5
x=24/5 : 6/1
x=24/5 ×1/6
x=4×1 totul supra /5×1
x=4/5





2x/3=6/12
2x=6/12 ×3/1
2x=6×1 totul supra /4×1
2x=6/4
x=6/4 :2/1
x=6/4 ×1/2
x=3×1 totul supra /4×1
x=3/4




x+2/3=4/5
x=4/5-2/3
x=3×4-5×2 tot asta supra /15
x=12-10 totul supra /15
x=2/15