Question 3C: Four minus seven equals negative two.
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2c-10
5y-4 = 7 5y = 7+4 = 11 y = 11 / 5 = 2.2
45+4 = 49 49/7=7 7*7=49-4=45 so x=7
2a*4b*(-3c) = ? 2 * 4 * -3 * a * b * c = ? -24abc
2c + 4 - 3c = -9 + c + 5 -c + 4 = c - 4 -2c = -8 2c = 8 c = 4