3.5
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Correct
4m + 9 + 5m - 12 = 42 Combining like terms to both sides:9m=42+12-9=>9m=45 divide both side by 9:m=5;
5.25
Yes, 42 inches is equivalent to 3.5 feet, not 4 feet. To convert inches to feet, you divide the number of inches by 12 because there are 12 inches in a foot. Therefore, 42 inches divided by 12 equals 3.5 feet.
3x+42=6x+12 42=6x-3x+12 42=3x+12 42-12=3x 30=3x 10=x