Решите уравнения : |х|+3=5 ...

Question

Решите уравнения : |х|+3=5 ...

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Answer 1

1) |х|+3=5
|х|=5-3
|х|=2
х=2. х=-2

2)|у|-2=1
|у|=1+2
|у|=3
у=3. у=-3

3)|2х|+3=9
2•|х|=9-3
2•|х|=6
|х|=3
х=3. х=-3


4)|5у|-4=6
5•|у|=6+4
5•|у|=10
|у|=2
у=2. у=-2

Answer 2

Пошаговое объяснение:

1) |x| + 3 = 5

  |x| = 2

  x = 2, x = -2

2) |y| - 2 = 1

  |y| = 3

  y = 3, y = -3

3) |2x| + 3 = 9

  2|x| = 6

  |x| = 3

  x = 3, x = -3

4) |5y| - 4 = 6

  5|y| = 10

  y = 2, y = -2