(1)3X-5=X+2 (2)3-2(X+1)=2(X-3) (3)(2X+1)/3-(5X-1)/6=1 (4) (0.02X+0.05)/0.03-(0.04X-0.3)/0
问题描述:
(1)3X-5=X+2 (2)3-2(X+1)=2(X-3) (3)(2X+1)/3-(5X-1)/6=1 (4) (0.02X+0.05)/0.03-(0.04X-0.3)/0
(1)3X-5=X+2 (2)3-2(X+1)=2(X-3) (3)(2X+1)/3-(5X-1)/6=1 (4) (0.02X+0.05)/0.03-(0.04X-0.3)/0.2=2 括号内是分子,/后面是分母
答
1)3X-5=X+2 3x-x=72x=7x=3.5(2)3-2(X+1)=2(X-3)3-2x-2=2x-64x=1+64x=7x=7/4(3)(2X+1)/3-(5X-1)/6=14x+2-5x+1=6-x=3x=-3(4) (0.02X+0.05)/0.03-(0.04X-0.3)/0.2=2(2x+5)/3-(2x-15)/10=220x+50-6x+45=601...