How do you solve #( 4f + 5 ) + ( 5f + 40 ) = 180#?

Question

1552 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-10-02T13:35:10

#color(blue)(f=15#

# (4f+5)+(5f+40)=180#

# (4f+5f)+(5+40)=180#

# 9f + 45 =180#

# 9f =180 - 45#

# 9f =135#

# f =135/9#

#color(blue)(f=15#