How do you solve #7g + 2g = 18#?

2 Answers
Oct 21, 2017

#g=2#

Explanation:

Combine like terms on the left side:

#color(blue)(7g+2g)=18#

#9g=18#

Divide #9# from both sides to solve for #g#

#cancel(9g)/cancelcolor(red)(9)=18/color(red)9#

#g=2#

Oct 22, 2017

On the LHS, both are variables, so they can be added easily( it is like adding a number)
#9g=18#
Now, the 9 on the LHS will go to the RHS as #18/9# because on the LHS it is in multiplication#(9 xx g)# so on RHS it will inverse,
#g=18/9#
#g=2#