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3m - 12 = -6 Add 12 to both sides, so m is by itself: 3m = 6 Now divide both sides by 3 to find the answer: m = 2
Suppose n*6 = 72 Divide both sides of the equation by 6: n = 12
6m + 15 = 12 Subtract 15 from both sides: 6m = -3 Divide both sides by 6: m = -3/6 = -1/2
divide both numbers (if even, as in your case) by 2. It equals 3/15. Since you can continue, divide again, but this time, they are both divisible by 3, so divide by 3. It equals 1/5. Since you can no longer divide evenly, 6/30 simplified is 1/5. or, a faster way is divide 6/30 by 6. It still equals 1/5.