Alfa=beta, gama=alfa+102
alfa+beta+gama=180
alfa+alfa+alfa+102=180
3alfa=78, alfa=beta =78/3 = 26
alfa=26,beta=26, gama=128
Х=7 х+9=0 х+1=5
х+9=0
х=0-9
х=-9
-9+9=0
<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>