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18 April, 03:45

2a+6b=100

what is 5a+15b=?

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Answers (2)
  1. 18 April, 04:29
    0
    Step-by-step explanation:Simplifying

    2a + 6b = 100

    Solving

    2a + 6b = 100

    Solving for variable 'a'.

    Move all terms containing a to the left, all other terms to the right.

    Add '-6b' to each side of the equation.

    2a + 6b + - 6b = 100 + - 6b

    Combine like terms: 6b + - 6b = 0

    2a + 0 = 100 + - 6b

    2a = 100 + - 6b

    Divide each side by '2'.

    a = 50 + - 3b

    Simplifying

    a = 50 + - 3b
  2. 18 April, 06:37
    0
    5 (50x - 3bx + 50 - a) or 5 (a + 3b) (Depending on the question and what is asked)

    Step-by-step explanation:

    2a + 6b = 100

    a = 50-3b

    b = 50/3 - 1/3a

    replace

    5a + 15b =

    5*50-3b + 15*50/3 - 1/3a =

    5 (50x - 3bx + 50 - a)

    ^This would be the answer if we use the same value of a and b from the 2a+6b=100 equation.

    If we use a unknown value for a and b. Then, the answer would be 5 (a + 3b).
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