Question

Ex:5,6,7,8,9,10 Dau coroana

Answer 1

5.)2/3x-1/2=5/6⇒4x-3/6=5/6⇒6(4x-3)=30⇒24x-18=30⇒24x=30+18⇒24x=48⇒x=48/24⇒x=2
6)x∈Z,x/8
x=8 
A={1.2.3.4.5.6.7.8}
7)720.144
[720.144]=2⁴X3⁴X5=32X81X5=12960

8)UNGHIURIE CONGRUENTE AU MASURA DE 60 DE GRADE
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