Question

Ex 5. Part l. Dau coroanaa
Cu explicatie

Answer 1

Răspuns:

$\frac{3}{4} = \frac{a}{12}$

$4a = 36$

$a = 9$

$\frac{3}{4} = \frac{15}{b}$

$3b = 60$

$b = 20$

$a + b = 9 + 20 = 29$

Answer 2

Explicație pas cu pas:

$\dfrac{3}{4} = \dfrac{a}{12} \iff a = \dfrac{3 \cdot 12}{4} \\ \implies a = 9$

$\dfrac{3}{4} = \dfrac{15}{b} \iff b = \dfrac{4 \cdot 15}{3} \\ \implies b = 20$

$\implies a + b = 9 + 20 = 29$