Date post: | 20-Jan-2018 |
Category: |
Documents |
Upload: | charles-maxwell |
View: | 214 times |
Download: | 0 times |
3.1-3.2 Solving One Step Equations
subtract 3
subtract 3
Adding or subtracting the same number from each side of an equation produces an equivalent equation.
Addition and Subtraction Property of Equality
Solving Multiplication & Division EquationsMultiplying or dividing each side of an equation
by the same number produces an equivalent equation.
3x = 6
x = 2
divide into 3 groups
In order to solve One-Step Equations use the inverse operation to isolate the variable.
using division2x = 242x = 242 2x = 12
using multiplication x
3 = 4
= 4 x 33 3
x = 12
using additionx - 2 = 6
x - 2 + 2 = 6 + 2 x = 8
x + 5 = 7x + 5 - 5 = 7 - 5
x = 2
using subtraction
Write and solve an equation to model the statement.
Five less than a number n is negative fifteen.
Solve the equation. Check your solution.
8.15 + p = 11.39 x - = 1 5
3 5
Solve the equation. Check your solution.
x -1.5 = -8 -4.8x = 24
Simplify and then solve the equation.
4 + d - 7 = 15 0.7w + 2.8 + 0.3w = 3
Assignment
p.119 (1, 10-18 evens, 26-30 evens, 33) p.124 (2, 12-20 evens, 30, 33, 40, 48-50)
Due Tuesday
+15 +15 y = 24
-52 -52 -28 = n
-48 -48 -37 = c
24 - 15 = 9 9 = 9
24 = 52 + (-28)24 = 24
11 = -37 + 4811 = 11
+2.94 +2.94 4.7 = a
- 1/2 -1/2 x = 0
-2 + x = 12 +2 +2 x = 14
1.76 = 4.7 - 2.94 1.76 = 1.76
0 + 1/2 = 1/2 1/2 = 1/2
2 + 14 - 4 = 12 16 - 4 = 12 12 = 12
d + 18 = -11 -18 -18 d = -29
-29 + 6(3)= -11 -29 + 18 = -11 -11 = -11
35 = n + 8-8 -8 27 = n
24 + 38 + 16 + k = 97 78 + k = 97 -78 -78 k = 19 cm
96 96 .5 = z
5570 = x
1414350 = h
48 = 96(.5)48 = 48
14 = 70/514 = 14
25 = 350/1425 = 25
r = 216
1818 15 15105 = k
216/18 = 12 12 = 12
7 = 105/157 = 7
-1 -1m = 12/3m = 4
66
x = 8
b = 2A h
1000 = 20n 20 20 50 m= n
100 = 1/5t 5 500 m = t
5
250 = 1.25f 1.25 1.25 200 m = f