SOLUTION: Would you check my answers on these problems please & correct if need be? Thank you so much. 1.Combine like terms: 3x – 6x2 + 2 – 4x2 + 7x – 1 – 8 + 3x2 Answer: 10x – 7x2

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Question 32356: Would you check my answers on these problems please & correct if need be?
Thank you so much.

1.Combine like terms:
3x – 6x2 + 2 – 4x2 + 7x – 1 – 8 + 3x2
Answer: 10x – 7x2 - 7
2. Solve for x:
7x – 3 = -5x – 18
Answer:
7x = -5x – 15
+5x + 5x
12x = -15
12 12
x = - 1 1/4

3. Solve for x:
4(x – 1) + 2 = 3x + 8 – 2x
Answer:
4x –4 + 2 = x + 8
-x - x
3x –2 = 8
+ 2 + 2
3x = 10 x = 3 1/3
4. Solve for x:
(x – 4)/2 – 1/5 = (7x + 1)/20
Answer:
x/2 –2 –1/5 = 00.5x
x/2 –2.2 = 00.5x
(2) x/2-2.2 = 00.5x
2x/2 –4.4 = 1
+ 4.4 + 4.4
2x/2 = 4.5
1x= 4.5
x = 4.5
5. Translate to an algebra statement; do not solve:
Three times the sum of a number and seven yields the same result as the twice the same number decreased by four.
Answer: 3a + 7 = 2a –4



Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
You can check your answers by substituting the value you get for
the variable into the original equation.
5) 3(a+7)=2(a-4)
Cheers,
Stan H.
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