ALG 2! plz help urgent!!

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1.)Four times a certain number is the same as the number increased by 78. Find the number.

2.)A blue bike is $14 less than a red bike. The sum of their prices is $300. How much is the red bike?

3.)Alex is six years older than his sister, Emma. The sum of their ages is 32. How old is Alex?

4.)Mrs. Computer is 3 times older than her daughter, Mousy. The sum of their ages is 52. How old is Mousy?

5.)Mike is 5 years more than twice as old as Tom. The sum of their ages is 65. How old is Mike?

  • ALG 2! plz help urgent!! -

    1)
    4n = n + 78
    3n = 78
    n = 78/3
    n = 26

    I'll be glad to check your answers for the other problems.

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