( х / 4 ) + х = 4
х / 4 = 4 - х
х = 4( 4 - х )
х = 16 - 4х
5х = 16
х = 3,2
<span>2+3(y-1/3)-2(0.5y)</span>
<span>2+3(y-1/3)-2(0.5y)</span>
<span>2+3y-1-y</span>
<span>1+2y</span>
<span>
</span>
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<span>а2-6а-16=а2-8а+2а-16=а(а-8)+2(а-8)=(а-8)(а+2)</span>
7√3+2√27-√75=7√3+2√(9×3)-√(25×3)=
7√3+6√3-5√3=8√3