当a+3b/a-b=4时,求代数式2(a+3b)/a-b+3(a-b)/a+3b
问题描述:
当a+3b/a-b=4时,求代数式2(a+3b)/a-b+3(a-b)/a+3b
答
2(a+3b)/a-b+3(a-b)/a+3b
=2*4+3/4
=8+3/4
=35/4