Alicia necesita resolver el siguiente sistema de ecuaciones planteado aplicando el método de igualación que aprendió recientemente: ¿Cuál de las siguientes opciones es la correcta si despeja x, las iguala y simplifica los denominadores?

Seleccione una:

a.
3 - 3y = 4 + 7y

b.
2 + 2y = 4 + 7y

c.
2 - 2y = 4 + 7y

d.
1 - y = 4 + 7y

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck