Question

This is Daniela’s work to solve the equation 13 x + 42 = 276.

13 x + 42 = 276. 13 x = 318. x = 24 and StartFraction 6 Over 13 EndFraction.

Answer 1

What is the question asking?

Answer 2

Which property did Daniela need to use to avoid her error?

Answer 3

forgot to add that sry

Answer 4

Can you post a screenshot please?

Answer 5

yes

Answer 6

Ok thanks,

Answer 7

\(13x+42=276\)
So it looks like she added 42 and 276
but really she should have changed the plus `(+)` to a minus `(–)`
then since it's a minus now, subtract it from both sides
so subtract 42 from both sides of the equation
which would look like this; \(13x+42−42=276−42\)
So after subtraction 42 from both sides you should get the answer of \(13x=234\)
So we have 13x so we have to take 13, and divide both sides of the equations by 13
So the equation we should have when we are dividing should be \(\frac{13x}{13}=\frac{234}{13}\) So then 13x/13 would cancel out
So now we have \(\cancel{\frac{13x}{13}}=\frac{234}{13}\)
So then after you solve 243/13 then you should have your answer
so basically you simplify 234/13

Answer 8

thx

Answer 9

np

Answer 10

tsym

Answer 11

np np