用加减消元法解方程组3y-2x=48,3y+2x=90.再用加减消元法解方程组3s+2t=4,2s-3t=7
问题描述:
用加减消元法解方程组3y-2x=48,3y+2x=90.再用加减消元法解方程组3s+2t=4,2s-3t=7
答
用加减消元法解方程组3y-2x=48,3y+2x=90.再用加减消元法解方程组3s+2t=4,2s-3t=7