Question

X+7 supra 10 = 3 supra 2​

Answer 1

Explicație pas cu pas:

(x+7)/10=3/2  |*2

x+7=15

x=15-7

x=8

sau x+(7/10)=3/2⇒x=3/2-7/10⇒x=(15-7)/10⇒x=8/10⇒x=4/5

Bafta!

Answer 2

$x + \frac{7}{10} = \frac{3}{2} \\ \\ x + \frac{7}{10} - \frac{7}{10} = \frac{3}{2} - \frac{7}{10} \\ \\ x = \frac{3}{2} - \frac{7}{10} \\ \\ x = \frac{3 \times 5}{2 \times 5} - \frac{7}{10} \\ \\ x = \frac{15}{10} - \frac{7}{10} \\ \\ x = \frac{15 - 7}{10} \\ \\ x = { \frac{8}{10} }^{(2} \\ \\ x = \frac{8 : 2}{10 : 2} \\ \\ x = \frac{4}{5}$