On January 20th, 2009, in class, Mr. Harbeck taught us how to solve multiplicative algebra equations. He also reviewed how to solve adding and subtracting algebra questions. Thes are some of the questions he gave us to do in class and for homework.
Remember:
Isolate the variable
Cancel using
Opposite
Balance
Verify
These are some of the following questions that i am going to help you with:
3n+8=20
3n+8-8=20-8 (add the opposites and what you do to one side you so to the other)
3n=12
3n/3=12/3
n=4
verify
3n+8=20
3(4)+8=20
12+8=20
20=20
7x-2=61
7x-2+2=61+2
7x=63
7x/7=63/7
x=9
verify
7x-2=61
7(9)-2=61
63-2=61
61=61
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