Numa loja de bicicletas, na época de verão os preços subiram 5%. O Alexandre comprou uma bicicleta por 210€. Quanto custava a bicicleta antes do aumento?

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

the answer will be b x² +x-1

step-by-step explanation: