Вправи: 153

153. Спростіть вираз:

1) 1\28y + 316y = 2+316y = 5y16y;

2) 2a\4a-1 + 5a4(a-1) = 8a+5a4(a-1) = 13a4(a-1);

3) 2b3(a2+ 3) + 4b\3a2+ 3 = 2b+12b3(a2+ 3) = 14b3(a2+ 3);

4) ac\37x2 – 2ac21x2 = 3ac-2ac21x2 = ac21x2;

5) 2c\43(2-a) – 5c\34(2-a) = 8c-15c12(2-a) = –7c12(2-a);

6) 3c\310(1+x) – 2c\215(1+x) = 9c-4c30(1+x) = 5c30(1+x) = c6(1+x).