Respuesta :

Answer:

[tex]\dashrightarrow \: { \tt{ - 3 + 9(1 - 7r)}}[/tex]

• open brackets following distributive property:

[tex]\dashrightarrow \: { \tt{ - 3 + 9 - 63r}}[/tex]

• simplify:

[tex]\dashrightarrow \: { \tt{6 - 63r}}[/tex]

ACCESS MORE