5 x 3a= 15a
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3x + 5 = -20. First, subtract 5 from both sides of the equation: 3x + 5 - 5 = -20 - 5; and simplify: 3x = -25. Then divide both sides by 3: 3x / 3 = -25 / 3; and simplify: x = -8 1/3 (or -8.33)
minus a minus is plus, so it's -8 + 3, which is 3 - 8, or -5
5 root 3
2a*4b*(-3c) = ? 2 * 4 * -3 * a * b * c = ? -24abc
divide both numbers by a common denominator, e.g. 2, such that the ratio becomes 3:5.