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TrivialRen1894
28.08.2020 •
Mathematics
Which of the following equations have no solution? Check all that apply.
6x + 1 = 3(2x - 4)
2-5x = 7x - 12
4(3 - x) = 2(6 - 2x)
5(x + 2) = 2(x-4)
-4(x + 3) = 4(-x-1)
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Ответ:
Hi there! :)
Equations 1 and 5.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
We can simply each answer choice to find those which have no solution:
1. 6x + 1 = 3(2x - 4)
6x + 1 = 6x - 12
0 ≠ - 13, NO SOLUTION.
2. 2 - 5x = 7x - 12
14 = 12x
x = 7/6. 1 SOLUTION.
3. 4(3 - x) = 2(6 - 2x)
12 - 4x = 12 - 4x
0 = 0. INFINITE SOLUTIONS.
4. 5(x + 2) = 2(x - 4)
5x + 10 = 2x - 8
3x = -18
x = -6. 1 SOLUTION.
5. -4(x + 3) = 4(-x - 1)
-4x - 12 = -4x - 4
0 ≠ 8. NO SOLUTIONS.
Therefore, the only equations with no solutions are equations 1 and 5.
Ответ: