Question

6 supra 10 x a +80 =
a=?
x-ori
imi puteti si explica va rog

Answer 1

[tex] \frac{6}{10} *a+80=a\\ (aducem~tot~la~acelas~numitor~sa~scapam~de~numitor)\\ 6a+800=10a\\ 6a-10a=-800\\ -4a=-800\\ a=-800:(-4)\\ a=200\\\\ Facem~proba:\\ \frac{6*200}{10} +80=200\\ \frac{1200}{10} + \frac{800}{10} = \frac{2000}{10} \\ \frac{2000}{10} = \frac{2000}{10} [/tex]