解方程:(1) 0.5x-0.7=6.5-1.3x (2) -1/3 (1-2x) = 2/7 (3x+1)
问题描述:
解方程:(1) 0.5x-0.7=6.5-1.3x (2) -1/3 (1-2x) = 2/7 (3x+1)
答
解方程:(1) 0.5x-0.7=6.5-1.3x (2) -1/3 (1-2x) = 2/7 (3x+1)