September 2018 3 222 Report
Zapisz, jakie działania wykonano po obu stronach równania
a)
5x - 1 = ½ (3x - 8) |.......
10x - 2 = 3x - 8 |.......
7x - 2 = -8 |......
7x = -6 |.......
x = -⁶/₇

b)
4(½x - 3) = 8 + 12x |.......
½x - 3 = 2 |.......
-2 ½x - 3 = 2 |.......
-⁵/₂x = 5 |.......
x = -2
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