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4(1+2⁻²)+(⅓)⁻²=4(1+¼)+9=5+9=14
70 % - 14
100 % - x
x=14*100/70= 20
Zadanie 18/31
a) a=(2⁶(razy)2⁵):(2³)³ i b=[3¹²:(3⁴)²](razy) 3⁻³
a=2¹¹:2⁹=2²=4
b=(3¹²:3⁸)* 3⁻³=3⁴* 3⁻³=3¹=3
4 - 100%
3 - x%
x= 300/4= 75%
b) a= (⅖)³(razy)(1¼)² i b=0,2²+0,4²
a= ⁸/₁₂₅* ²⁵/₁₆= ¹/₁₀
b=0,04+0,16=0,2= ²/₁₀
¹/₁₀ - 100%
²/₁₀ - x%
x= 200%