Question

Rezolvati in Q ecuatiile: a) 5supra x=-3supra 3 b) x+2supra 3=7supra 5 c) 3x=0.3supra 7

Answer 1

$\frac{5}{x}=- \frac{3}{3}$

x = 5×3:(-3)

x = - 5

$b)\frac{x+2}{3} = \frac{7}{5} \\ \\ 5(x+2)=7*3 \\ \\ 5x+10=21 \\ \\ 5x=21-10 \\ \\ x= \frac{11}{5}$

c)3x=0,3:7

$3x= \frac{ \frac{3}{10}}{7} \\ \\ 3x*7= \frac{3}{10} \\ \\ 21x*10=3 \\ \\ 70x=1 \\ \\ x= \frac{1}{70}$