Five times the sum of twice a number, #x#, and seven is thirty-five. What is the number?

↳Redirected from "What balanced equation represents a redox reaction?"
1 Answer
Logomath A.N.
Sep 25, 2017

#x=0#

Explanation:

To write that as an equation, it would be #5(2x+7)=35#, since in 'Five times', #5# would go outside the parentheses and 'the sum of twice a number, x, and seven' would be inside the parentheses, and would look like #(2x+7)#. 'Is thirty-five' is respectively #=35#.

Solving for #x#:

#5(2x+7)=35#

Use the distributive property
#10x+35=35#

Subtract 35 on both sides
#10x+35-35=35-35#

#10x=0#

#10x/10=0/10# is #0#.

Check:

#5[2(0)+7]=35#
#5(7)=35#
#35=35#

Related questions
Impact of this question
6136 views around the world
You can reuse this answer
Creative Commons License