Question

7a+3b=16;3a+7b=1 plz solve it and show me fast ​

Answer 1

Answer:

$\huge\star7a + 3b = 16$

$a + b = \frac{16}{ 7\times 3}$

$a + b = \frac{16}{21}$

$\huge\star 3a + 7b = 1$

$a + b = \frac{1}{3 \times 7}$

$a + b = \frac{1}{21}$