Question

find the product (2/5a +1/7b) (3a+4b-2)​

Answer 1

Step-by-step explanation:

$( \frac{2}{5} a + \frac{1}{7} b)(3a + 4b - 2) \\ (\frac{14a + 5b}{35} )(3a + 4b - 2) \\ \frac{42 {a}^{2} + 56ab - 28a + 15ab + 20 {b}^{2} - 10b }{35} \\ \frac{ 42 {a}^{2} + 20 {b}^{2} - 28a - 10b + 71ab}{35}$

Answer 2

Answer:

(2/5a×3a)+(1/7b×4b)-2

6/5a²+4/7b²-2

42/35+20/35-2

42+20/35-2

62/35-2

60/35=12/5