Question

stiind ca a/b=4 unde a si b sunt numere reale nenule aratati ca 3a-2b/b=10

Answer 1

[tex]\frac{a}{b}=4\\a=4b\\\frac{3a-2b}{b}=\frac{3*4b-2b}{b}=\frac{12b-2b}{b}= \frac{10b}{b}=10[/tex]

Answer 2

$fractia\;se \;mai\;poate\;scrie\;:\;\frac{3a-2b}{b}=3\frac{a}{b}-2\frac{\not{b}^1}{\not{b}_1}=3\cdot4-2=10$