5. Rozwiąż równanie:
a) 4x - 2 = 10 + 2x
b) 3 (x + 4) + 2 = 2-x
a) 4x - 2 = 10 + 2x
b) 3 (x + 4) + 2 = 2-x
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[tex]a)\\\\4x-2=10+2x\\\\4x-2x=10+2\\\\2x=12\ \ |:2\\\\x=6\\\\\\b)\\\\3(x+4)+2=2-x\\\\3x+12+2=2-x\\\\3x+14=2-x\\\\3x+x=2-14\\\\4x=-12\ \ |:4\\\\x=-3[/tex]
4x-2x=10+2
2x=12 / : 2
x=6
b) 3(x+4)+2=2-x
3x+12+2=2-x
3x+x=2-12+2
4x=-12 / :4
x=-3