Question

Find the like terms in the expression y+1.2y+ 1.2z.

Answer 1

$1.\\\underline{y}+\underline{1.2y}+\underline{1.2z}\to\boxed{y;\ 1.2y;\ 1.2z\to\boxed{D}}$

$2.\\2+17x-5x+9=(17x-5x)+(2+9)=\boxed{12x+11\to\boxed{B}}$

$3.\\3(5y+6)-4=(3)(5y)+(3)(6)-4=15x+18-4=\boxed{15y+14\to\boxed{C}}$

$4.\\81-27p=27\cdot3-27\cdot p=\boxed{27(3-p)\to\boxed{B}}\\but\\81-27p=9\cdot9-9\cdot3p=\boxed{9(9-3p)\to\boxed{A}}$