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Vlad1618 [11]
3 years ago
8

Write an equation and then solve it ​

Mathematics
2 answers:
____ [38]3 years ago
7 0

2 + 2 = x

4 = x

x = 4

4 - 1 = x

3 = x

x = 3

Likurg_2 [28]3 years ago
3 0

(Equation) a - 3 = -8

Explanation: If you're asked to solve for <em>a</em> in the equation a - 3 = -8, you want to try to get <em>a</em> 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 <em>a </em>so in order to get <em>a </em>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 <em>a</em>. On the right side of the equation, -8 + 3 simplifies to -5 so <em>a = -5</em>.

To check our answer, we can substitute -5 back in for <em>a</em> 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.

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Step-by-step explanation:

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kramer

Answer:

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Step-by-step explanation:

I think you meant:

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To simplify this, that is, to "rationalize the denominator," multiply both numerator and denominator by the conjugate of 1 + i, which is 1 - I:

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