Answer:
11 79/80
Step-by-step explanation:
2+4+3+ 3/4+4/5+8/9
=9+ 3(5*9) +4(4*9) + 8(5*4)/4*5*9
=9 + 135+ 144+160/180
=9+ 439/180
=9+2 + 79/80
=11 79/80
2 3/4 + 4 4/5 + 3 8/9 =
= (2x4+3)/4 + (4x5+4)/5 + (3x9+8)/9
= ⁴⁵⁾11/4 + ³⁶⁾24/5 + ²⁰⁾35/9
= (495 + 864 + 700)/180
= 2059/180
