Question

Stiind ca 2b/5 = 4/3b, aflati valiarea expresiei 6ab-8

Answer 1

2a/5=4/3b=>6ab=2= >20-8=12

Answer 2

$\frac{2a}{5} = \frac{4}{3b}$

$2a \times 3b = 4 \times 5$

$6ab = 20$

$ab = \frac{20}{6}$

$ab = \frac{10}{3}$

$6ab - 8 = 6 \times \frac{20}{6} - 8 = 20 - 8 = 12$