Question

u=7/9(u+6)




please answer it's answer will come 21​

Answer 1

Answer:

u=21

Step-by-step explanation:

u= 7u/9+42/9

u-7u/9=42/9

9u-7u/9=42/9

2u/9=42/9

2u/9x9=42

2u=42

u=42/2

u=21

Answer 2

Answer:

Step-by-step explanation:

$u=\frac79(u+6)\\\\9u=7u+42\\\\9u-7u=42\\\\2u=42\\\\\bf u=21$