Solve It!
1/2x-1=3
x = 8
Eight less than 7 times a number is the same as 4 more than 3 times the number. Find the number.
3
5x + 8 = 13 – 2x
x = 5/7
The total cost of 5 pens and 15 pencils is $33. If the pencils cost 20 cents each, find the cost of each pen.
$6
Is 48 a solution to 1/3(x+4)=20?
No
A 12-inch candle and an 18-inch candle are lit at 6 pm. The 12-inch candle burns 0.5 inches every hour. The 18-inch candle burns two inches every hour. At what time will the two candles be the same height? Let h represent the number of hours.
h = 4 hours
10 pm
3(3 – 2x) – (1 + x) = 10 – 13x
x = 1/3
The first side of a triangle is 8 meters longer than twice the second side. The third side is 3 times the second side. The perimeter is 128 meters. Find all three sides.
48 m, 20 m, 60 m
Is -5 1/2 a solution to 3x – 1 = 5x + 10?
Yes
Justin has $7.50 more than Eva, and Emma has $12 less than Justin. Together, they have a total of $63. How much money does each person have?
Eva = $20, Justin = $27.50, Emma = $15.50