Question 700980
I just finish taking a quiz got 4 wrong out of 10.
1. Solve using the addition principle: -8 + y = 17. My answer was y = 25
25 is correct.
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2. Solve using the multiplication principle: -12x = 72. My answer was x = -6
-6 is correct.
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3. Solve using the multiplication principle:4/5x = 16. My answer was x = 20
20 is correct, assuming it's (4/5)x and not 4/(5x)
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4. Using the formula x = 2a + y, solve for y. My answer was y = -2a+x
That's correct.