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48 * 3
14 * 5
48 = 3b
14 = 5c
21 = 13-k
2n = n-6
m = 0,7m :10
x +6 = 10 -/: 1/2x
x :3 = x-8
x-5 = 3: (x+3)
1,5x = 26+x
0,2(x+5) = 0,3x
0,1 - x = 2 - 3x
k-13=21 -->2n-6=n --> x-5)razy 3=x+3
½ x+10=6 -->⅓ x+8=x --> (x-5)razy3=x+3
1,5=x+26 -->dwie dziesiąe razy (x+5)=0,3x -->x-0,1x+2=3x