August 2018 2 23 Report
Zapisz , jakie działania wykonano po obu stronach równania :("/" = kreska ułamkowa) ; ( "|" - obustronnie .... ) *... = w kropkach ma być to co odjeliśmy , lub dodaliśmy albo jakie inne działanie i liczba .
a)
5x - 1 = ½(3x-8) |.......
10x - 2 = 3x - 8 |..........
7x- 2 = -8 |.......
7x = -6 |.........
x = - 6/7
-------
b) 4(½ x -3 ) = 8+ 12x |.....
½ x - 3 = 2+ 3x |....
- 2½ x - 3 = 2 |.....
- 5/2 x = 5 |....
x = -2
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