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Kristen
Mathematics
20 January, 08:17
What is (4x+-7) (2x+-9)
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Answers (
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Ethen
20 January, 08:23
0
Answer:x=1
Step-by-step explanation: (4x+-7) = (2x+-9)
We move all terms to the left:
(4x+-7) - ((2x+-9)) = 0
We add all the numbers together, and all the variables
(4x-7) - ((2x-9)) = 0
We get rid of parentheses
4x - ((2x-9)) - 7=0
We calculate terms in parentheses: - ((2x-9)), so:
(2x-9)
We get rid of parentheses
2x-9
Back to the equation:
- (2x-9)
We get rid of parentheses
4x-2x+9-7=0
We add all the numbers together, and all the variables
2x+2=0
We move all terms containing x to the left, all other terms to the right
2x=-2
x=-2/2
x=-1
(4x+-7) = (2x+-9)
We move all terms to the left:
(4x+-7) - ((2x+-9)) = 0
We add all the numbers together, and all the variables
(4x-7) - ((2x-9)) = 0
We get rid of parentheses
4x - ((2x-9)) - 7=0
We calculate terms in parentheses: - ((2x-9)), so:
(2x-9)
We get rid of parentheses
2x-9
Back to the equation:
- (2x-9)
We get rid of parentheses
4x-2x+9-7=0
We add all the numbers together, and all the variables
2x+2=0
We move all terms containing x to the left, all other terms to the right
2x=-2
x=-2/2
x=-1
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