已知2a-b=3分之1,求12a-12ab+3b的值
问题描述:
已知2a-b=3分之1,求12a-12ab+3b的值
答
12a-12ab+3b =3(4a-4ab+b) =3(2a-b) =3*(1/3) =3*1/9 =1/3
已知2a-b=3分之1,求12a-12ab+3b的值
12a-12ab+3b =3(4a-4ab+b) =3(2a-b) =3*(1/3) =3*1/9 =1/3