what does the variable mean??????

Mathematics
Tutor: None Selected Time limit: 1 Day

Ms. Deangle orders writing journals for each of her students. She has 28 students in her class. After she gives one journal to each of her students, she realizes that she has 7 journals left. She writes the following equation.

w-28=7

Mar 26th, 2015

w = the number of writing journals

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Mar 26th, 2015

thanksss

Mar 26th, 2015

you're welcome :)

Mar 26th, 2015

can you answer another question

w-28=7

state the inverse operation needed to isolate the variable. then, solve the equation

Mar 26th, 2015

add 28 to both sides to get

w -28 +28 = 7+28

w = 35

Mar 26th, 2015

oh okay that makes sense thanks again

 

Mar 26th, 2015

wait how does w=35

Mar 26th, 2015

35 - 28 = 7

Mar 26th, 2015

oh sorry about that but thanks again :)

Mar 26th, 2015

no problem ;)

Mar 26th, 2015

hey its me again, so my teacher said my math was "incomplete" and i don't know why can you please tell me whats wrong and can you help me answer the questions

Mar 26th, 2015
win_20150325_211706.jpg

oh and these kids guess that he is 92 and he says hes at least 92

Mar 26th, 2015

acutly nevermind

Mar 26th, 2015

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Mar 26th, 2015
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Mar 26th, 2015
Dec 11th, 2016
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