Question

(2/5a+1/7b)+(3a+4b-2)​

Answer 1

Step-by-step explanation:

$\frac{2}{5a} + \frac{1}{7b} + 3a + 4b - 2 \\ \\ \frac{14b + 5a}{35ab} + 3a + 4b - 2 \\ \\ \frac{14b + 5a + 105ab + 140ab - 70ab}{35ab} \\ \\ \frac{14a + 5a + 175ab}{35ab}$