How do you translate "7 less than twice a number and k" as an algebraic expression?
Here are a couple hints to turn this into an equation:
- "Less than" means subtraction, whereas "more than" means addition.
- Saying "twice a number" means that you are multiplying that number by 2
I will put the "7 less than" last, since it will be subtracted from the rest of the equation:
"twice a number"
"and k" (This means that it is twice
#n#and twice #k#, or they are both multiplied by 2)
#rArr 2n color(blue)k#
But this is lessened by
"7 less than"
#rArr 2nk color(blue)(- 7)#
So the phrase translated into an equation is: