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1、0.4(x-0.2)+1.5=0.7x-0.38 30x-10(10-x)=100 4(x+2)=5(x-2)120-4(x+5)=25 15x+863-65x=54 3(x-2)+1=x-(2x-1) 11x+64-2x=100-9x 14.59+x-25.31=0 x-48.32+78.51=80 820-16x=45.58 (x-6)7=2x 3x+x=18 0.8x+2.2=6.6 12.5-3x=6.5 1.2(x-0.64)=0.54 x+12.5=3.5x 8x-22.8=1.2 2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7
2、x+(4-3x) 3(x-7)-29-4(2-x)=22 2(x-2)+2=x+1 30x-10(10-x)=100 4(x+2)=5(x-2) 120-4(x+5)=2815x+854-65x=54 3(x-2)+1=x-(2x-1) 11x+64-2x=100-9x14.59+x-25.31=0 (x-6)7=2x -23x+x=18 12.5-3x=6.5 1.2(x-0.6)=4.8x+12.5=3.5x 8x-22.8=1.2 2x=5x-3 x+5=8 答案x=6 x=5 x=18 x=18.75 x=16.18 x=3/2 x=2 x=10.72 x=49.81 x=28.5 x=8.4 X=4.5 x= 11 x=2 x=1.09 x=5 x=3x=-10 x=2 x=-3 x=-11 x=3 x=50 x=18 x=18 x=16 x=3/2x=2 x=10.72 x=8 x=9/2 x=2x=10 x=5 x=2.7 x=1 x=3