1.Rozwiąż równanie.
a)
b)
c)
a) 20-2x-5=0,5x-2-2
15-2x=0,5x-4
19=2,5x
x=7,6
b) -12(5x-2)-2=-8(x+1/4)
-60x+24-2=-8x-2
-52x=-24
x=27/12
c) x+2-2x=3x-6
-x+2=3x-6
8=4x
x=2
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a) 20-2x-5=0,5x-2-2
15-2x=0,5x-4
19=2,5x
x=7,6
b) -12(5x-2)-2=-8(x+1/4)
-60x+24-2=-8x-2
-52x=-24
x=27/12
c) x+2-2x=3x-6
-x+2=3x-6
8=4x
x=2