1)2(x + 3)+5(x + 1);
2)9(7 + y)+8(6 + y);
3)4(3x + 23)+7(6 + 5x);
4)12(9 + 8y)+3(11 + 6y);
2)9(7 + y)+8(6 + y);
3)4(3x + 23)+7(6 + 5x);
4)12(9 + 8y)+3(11 + 6y);
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2)9(7+у)+8(6+у)=63+9у+48+8у=17у+111
3)4(3х+23)+7(6+5х)=12х+92+42+35х=134+47х
4)12(9+8у)+3(11+6у)=108+96у+33+18у=114у+141