Question

3x 17 X 21

---- + --- = --- + ---

5 5 5 3
urgente xf

Answer 1

Explicación paso a paso: 3x/5+17/5=x/5+21/3
3x/5-x/5=21/3-17/5
2x/5=(105-51)/15
30x=5(54)
30x=270
x=270/30
x=9