Find the 23rd term of the arithmetic sequence 17, 19, 21, 23, ...
1 answer:
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8x - 3 = 15x + 18
First, subtract 8x from both sides. / Your problem should look like:
Second, simplify 15x + 18 - 8x to 7x + 18. / Your problem should look like:
Third, subtract 18 from both sides. / Your problem should look like:
Fourth, subtract -3 - 18 to get -21. / Your problem should look like:
Fifth, divide both sides by 7. / Your problem should look like:
= x
Sixth, simplify
to 3. / Your problem should look like: 
Seventh, switch sides. / Your problem should look like:
Answer: x = -3
First, subtract 8x from both sides. / Your problem should look like:
Second, simplify 15x + 18 - 8x to 7x + 18. / Your problem should look like:
Third, subtract 18 from both sides. / Your problem should look like:
Fourth, subtract -3 - 18 to get -21. / Your problem should look like:
Fifth, divide both sides by 7. / Your problem should look like:
Sixth, simplify
Seventh, switch sides. / Your problem should look like:
Answer: x = -3
