One-Step/Two-Step Equations
c/14 = -3
c = -42
2n + 5n + 7 = -42
n = -7
Solve the inequality
12b -3b +5 >=-31
b>=-4
WRITE AN EQUATION & SOLVE: Find three consecutive odd numbers whose sum is 51.
x = smallest number
x + x + 2 + x + 4 = 51
three numbers are 15, 17 and 19
Solve ad = f for a
What is
a = f/d
?
2x + 13 =13
x = 0
3c - 8c + 7 = -18
c = 5
7n - 8n -3 < 23
n > -26
What property is represented
x + 5 < y + 1
x + 5 - 5 < y + 1 - 5
Subtraction Property of Inequality
Solve 2s + t = r for t
What is t = r - 2s?
-67 = -8n + 5
n = 9
2(3a + 2) = -8
a = -2
-5(x+2)>15
x <-5
The perimeter of a rectangle is 50 cm. Find the area if its length is 5 inches greater than its width.
w = width
w + 5 = length
P = 2w + 2(w+5)
w = 10 cm; l = 15 cm A = lw --- A = 150cm
Solve y = mx + b for x.
What is
(y - b)/m = x
?
-4d + 6 + 2d = -14
d = 10
-3x + 9 = -3(x -3)
All Real Numbers
-6x + 9 >= -2x -7
x<=4
What property is represented
20x = 6y
(20x)/20 = (6y)20
Division Property of Equality
Solve 5a - b = 7 for a.
What is
a = (7 + b)/5
?
-t + 2 = 12
t = -10
2/3g + 1/2g = 14
g = 12
Maria’s score on four math tests are 89, 100, 90 and 92. What score can she get on the fifth quiz to have an average of at least a 95?
x = test score
(89+100+90+92+x)/92 >=95
x = 104%
Solve 2(j + k) = m for k
What is
k = m/2 - j
?