How do you write the following as an algebraic expression using x as the variable: Five more than the product of 7 and a number?

3 Answers
IHate P.
Mar 3, 2018

Literal word-to-number translation is very easy and fun.

Explanation:

We have to write five more than the product of 7 and an unknown. Let that unknown be x. Since we have to write 5 more than the product of 7 and x, we write
5+7x.

Jim G.
Mar 3, 2018

#7x+5#

Explanation:

#"let the number "=x#

#"product of 2 numbers means multiply the numbers"#

#rArr"the product of 7 and x "=7xx x=7x#

#"5 more means add on 5 to the product"#

#rArr7x+5" is the required expression"#

Tony B
Mar 3, 2018

#7x+5#

Explanation:

Five more than ........................#?+5#
the product of .........................#(?xx?)+5#
7 and a number.......................#(7xx x)+5#

Convention requires that this be written as: #7x+5#

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