Answer:
jcjdhuuuehfhvhcuuccdhjeicbw
Step-by-step explanation:
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add like terms on the left side (x + 2x), then isolate the variable on the left side by dividing both sides by 3.
x + 2x = 9
3x = 9 <em>added like terms</em>
x = 3 <em>divided both sides by 3</em>
Answer: 3
I think I can help with a few...
16. They are equal because of distributive property.
18. 12*5 and 3/8 -> 12/1*43/8 -> 516/8 -> 129/2 -> 64.5
19. Everything is right until the last step, where it should be 6 and 2/3.
Answer:
89.22123136
Step-by-step explanation:
