Question

1. Rozwiąż równania:

te już zrobiliśmy na lekcji (zamieszczam, żebyście zobaczyli jak to ma wyglądać):

a) -5 + x = 10 |+5
x = 15

x - 34 = -35 | + 34
x = -1

4x = 3x - 5 | -3x
x = -5


b) 64 + 2x = 46 + x | - x
64 + x = 46 | -64
x = -18

3 - x = -2x | + 2x
3 + x = 0 | - 3
x = - 3

4 + 3x = 2 + 2x | -2x
4 + x = 2 | - 4
x = -2


c) x + 1/4 = 1/2 + 2x
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3x + 1/7 = x - 1
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1 3/4 - 3x = - 3 1/4 - 4x
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Answer 1

X + ¼ = ½ + 2x |-x
¼=½ + x | -½
x = -¼

3x + 1/7 = x - 1 |-x
2x +1/7 = -1 |-1/7
2x = 1 1/7
x = 4/7

Answer 2

X + 1/4 = 1/2 + 2x |-x
1/4=1/2 + x | -½
x = -1/4

3x + 1/7 = x - 1 |-x
2x +1/7 = -1 |-1/7
2x = 1 1/7
x = 4/7