Download alg 1 2-4 with SR.notebook

alg 1 2­4 with SR.notebook
September 10, 2012
2-4, Solving Multi-Step Equations
To solve equations with more than one operation, often
called multi-step equations, undo operations by working
backward.
Solve each equation. Check your solution.
2a - 6 = 4
8 = 3r + 7
Solve each equation. Check your solution.
t + 21 = 14
8
k - 12
5
=4
alg 1 2­4 with SR.notebook
each equation. Check your solution.
1 Solve
September 10, 2012
2 Solve
each equation. Check your solution.
5q - 13 = 37
n+1
-2
3
= 15
Solve each equation. Check your solution.
s - 9 = -11
12
Consecutive integers are integers in counting order, such as 7, 8, 9.
Beginning with an even integer and counting by two will result in
consecutive even integers. Beginning with an odd integer and counting
by two will result in consecutive odd integers.
Consecutive Even Integers
­4, ­2, 0, 2, 4
Consecutive Odd Integers
­3, ­1, 1, 3, 5
The study of numbers and the relationships between them is called
number theory.
Susan had a $10 coupon for the purchase of any item. She bought a
coat that was on sale for ½ its original price. After using the coupon,
Susan paid $125 for the coat before taxes. What was the original
price of the coat? Write an equation for the problem. Then solve the
equation.
Write an equation for the following problem. Then solve the equation and answer the problem.
Find three consecutive integers whose sum is 21.
alg 1 2­4 with SR.notebook
Write an equation for the problem below. Then solve the equation and answer the problem.
September 10, 2012
4
Solve this equation.
Find three consecutive odd integers whose sum is 57.
20 = n - 3
8
5
Twelve decreased by a number equals -34.
Write an equation for this situation and then find the number.
6
Find three consecutive integers with a sum of 42.
A 14, 15, 16
B 11, 12, 13
C 12, 13, 14
D 13, 14, 15 The English alphabet contains 2 more than twice as many letters as
the Hawaiian alphabet. How many letters are there in the Hawaiian
alphabet?
Solve each equation. Check your solution.
4g - 2 = -6
18 = 5p + 3
alg 1 2­4 with SR.notebook
Solve each equation. Check your solution.
9=1+
m
7
3 a - 8 = 11
2
September 10, 2012
Find three consecutive even integers with a sum of -12.