4/21 ćwiczenia do matematyki klasa 6 "Liczby i wyrażenia algebraiczne" <te zielone :P >
Rozwiąż równania:
a) -5 + x = 10 | +5
...............x = 15 .............
x - 34 = - 35
...........................
4x = 3x - 5
...........................
b) 64 + 2x = 44 + x
.....................................
.....................................
3 - x = -2x
...............................
..................................
4 + 3x = 2 + 2x
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a) -5 + x = 10
x = 10 + 5
x = 15
x - 34 = -35
x = -35 + 34
x = -1
4x = 3x - 5
4x - 3x = -5
x = -5
b) 64 + 2x = 44 + x
2x - x = 44 - 64
x = -20
3 - x = -2x
-x + 2x = -3
x = -3
4 + 3x = 2 + 2x
3x - 2x = 2 - 4
x = -2
x - 34 = -35
x = -35 + 34
x = -1
4x = 3x - 5
4x - 3x = -5
x = -5
b) 64 + 2x = 44 + x
2x - x = 44 - 64
x = -20
3 - x = -2x
-x + 2x = -3
x = -3
4 + 3x = 2 + 2x
3x - 2x = 2 - 4
x = -2
Mam nadzieję, że udało mi się pomóc :) Liczę na NAJ ! :D