Question

determinati x stiind ca 1 supra 8 este egal cu x+3 supra 40

Answer 1

$\dfrac{1}{8} = \dfrac{x + 3}{40} \\ \\ \\ 1 \times 40 = 8 \times (x + 3) \\ \\ 40 = 8x + 24 \\ \\ 8x = 40 - 24 \\ \\ 8x = 16 \\ \\ x = 16 \div 8 \\ \\ x = 2$

Answer 2

[tex] \frac{1}{8} = \frac{x+3}{40} =\ \textgreater \ 8 ( x+3 ) = 40 =\ \textgreater \ 8x + 24 = 40 ; [/tex]
$8x = 40 - 24 =\ \textgreater \ 8x = 16 =\ \textgreater \ x = 2$