Pedrito en la casa de su amigo
You need to get x alone. So first you bring the 13 over and it becomes negative because it switches signs when switching sides
13x=104-13
13x=91
The you have to divide by 13 since you are multiplying on the other side
X=91/13
Your final answer should be
X=7
It's 7.4 because the 3 doesn't round the 4 up.
Derrick rode 21 total km.
You can find this by adding the 3 distances together and multiplying by 3. Also remember to watch the units as 500m = .5km.
Hi!! so here i’ll explain: for the first one, a times 3 is 3a. so you have 3a=-30. then you divide both sides by 3 and you have a=-10!! do the same for the rest, hope this helps