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15 March, 02:04

Write an equation and then solve it

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Answers (2)
  1. 15 March, 02:59
    0
    (Equation) a - 3 = - 8

    Explanation: If you're asked to solve for a in the equation a - 3 = - 8, you want to try to get a by itself on one side of the equation.

    If we take a look at the left side of our equation, a 3 is being subtracted from a so in order to get a by itself, we must add 3 to the left side of the equation. If we add 3 to the left side of the equation, we must also add 3 to the right side of the equation to keep our equation balanced.

    On the left side of the equation, our - 3 and + 3 cancel out and we're left with a. On the right side of the equation, - 8 + 3 simplifies to - 5 so a = - 5.

    To check our answer, we can substitute - 5 back in for a in the original equation and we get (-5) - 3 = - 8. (-5) - 3 can be thought of as (-5) + (-3) and you can see that this is a true statement so our answer checks.
  2. 15 March, 04:46
    0
    2 + 2 = x

    4 = x

    x = 4

    4 - 1 = x

    3 = x

    x = 3
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