Solving Equations Using Addition or Subtraction
Solve for b.
b - 6 = -14
b = -8
Solve for n.
-7n = 35
n= -5
Solve for d.
12 = 2d +3.2
d= 4.4
Write the word sentence as an inequality.
A number y added to 2 is greater than 7.
y+2 > 7
Solve for g. Graph the solution.
3 <= 7 +g
-4 <= g
Solve for k.
7 < 3.5k
k>2
Solve the inequality. Graph the solution.
8y-5 < 3
y<1
Solve for p.
10.5 +p = -8.32
p = -18.82
Solve for g.
g/2.1 = -6.8
g = -14.28
Solve for n.
-0.5(6 +2n)= 3
n= -6
A number m minus 1.5 is no less than 2.
m-1.5 >= 2
Solve for z. Graph the solution.
z-4.7 >= -1.6
z >= 3.1
Solve for c.
c/9 <= -4
c < = -36
Solve the inequality. Graph the solution.
-1.2b-5.3 >=1.9
b <= -6
Solve for d.
-7/12 = 1 5/6 + d
d = 5 7/12
Solve for a.
-3/5a = 2
a = -3 1/3
Solve for j.
5/6 (1+3j) = -2/3
j = -3/5
Tell whether the given value is a solution of the inequality.
t-3 >= 2; t=10
Yes, it is a solution.
Solve for b. Graph the solution.
2/7 > b +5/7
-3/7 > b
4.2y <= -12.6
y <= -3
Solve the inequality.
2> 8 - 4/3h
h > 9/2
Write the word sentence as an equation. Then solve the equation.
-13 is 4 less than a number n.
-13 + 4 = n (answers will vary)
n=-9
Write the word sentence as an equation. Then solve the equation.
The quotient of a number and 0.2 is -2.6.
x/0.2=-2.6 (Equations may vary.)
It costs $4 to enter the fair. Each ride costs $2.50. You have $21.50. How many rides can you go on?
7 rides
Graph the inequality on a number line.
n <= -2.5
See Miss Kielley's number line.
The inequality d +s > -3 is equivalent to d > -7. What is the value for s?
Solve the inequality. Graph the solution.
-1/3h >= 8
h <= -24
Solve the inequality.
-8 <= 2/5 (k-2)
k>= -18
The difference between the heights of your chair and your desk is -10 1/4 inches. The height of your desk is 29 3/4 inches. What is the height of your chair?
19 1/2 inches
The perimeter of a square is 26.46 inches. What is the side length of the square?
6.615 inches
The senior class has 412 students. They are assigned to different homerooms. There are 28 students in athe smallest homeroom and the remaining 12 homerooms have the same number of students. How many students are in each of the remaining 12 homerooms?
32 students
In order to try out for one of the parts in a play at the local theater, you must be at most 12 years old. Write and graph an inequality that represents this situation.
Answers will vary.
The possible values of x are given by x + 8 < = 6.
What is the greatest possible value of 7x?
-14
Write the word sentence as an inequality. Then solve the inequality.
3/4 is greater than or equal to a numver k divided by -8.
3/4 >= k/-8
-6<= k
You are at an elevation of -38 feet while exploring a cave. You begin a descent into the cave at a rate of -12 feet per minute. How long will it take you to reach an elevation deeper than -200 feet?
more than 13.5 minutes