One half of a number is -8. What is the number? Write an equation and solve.
Write an equation and solve.
1/2x = -8
x= -16
100
3.3x - 12 + 2.5x + 6
5.8x - 6
100
-5x + 7 = -8
x = -8
100
-7 + -4
What is -11?
200
One-fifths of a number is 7.
Write an equation and solve.
1/5 x = 7
x=35
200
-5.6 + 4x + 2.3 + 3x
-3.3 + 7x
200
- 7 = x / -4
x= 28
200
-11 + 4
What is -7?
300
See Google Slides
21 feet
300
4 (1/6x - 7) + 4x
4 2/3 x - 28
300
x + 4.6 = 1.3
x = -3.3
300
-8 + 6
What is -2
400
See Google Slides
3.5x + 7
400
-2.5b + 7 + 5.8b + 3.1
3.3b +8.1
400
x - 3/5 = 1/5
x = 2/5
400
14 - 7 -14
What is -7?
500
When it was raining the pool rose 1/3 feet per day. Write and solve an equation to find out how many days it takes for the water level to change to 13 feet.