Question

For yashwiagarwal please tell have u used 3 perpendicular drawn please tell fast

Answer 1

Question : 4/7+(-4/9)+3/7+(-13/9)
=4/7-4/9+3/7-13/9
=4/7+3/7-4/9-13/9
=7/7-17/9
=63-119/63
=-56/63
=-8/9 answer