)15-(8-5x)=7x+(4-2)+2=x+50
)(5y+1)+(1-y)=1
)2(x-2)-3(4x-1)=9(1-x)11x+64-2x=100-9x3
)7(2x-1)-3(4x-1)=4(3x+2)-1;(9y+1)+(1-3y);4
)3(x-7)-2[9-4(2-x)]=225)2(x-2)7)
30x-10(10-x)=10012
)3(x-2)+1=x-(2x-1)14
59+x-25
31=048
51=8035
52x-(1-0
52)x=804(x+2)=5(x-46
)-5=47
)-1x+174
)6x—3x十马52
)20%+(l-20%)(320-x)=320X40%(54
)2(x-2)-3(4x-1)=9(1-x)62
)3JC-1_+22~563
)4—耳68
r-l_5x-7~~4~_-671
)x-3兀+3_£斗26Ok0
9-02x0
02-2A()
)+=3+2y81
)j-22(
r+l)5(JC+1)182
)7(2x-1)-3(4x-1)=4(3x+2)-117
)(5y+1)+(1-y)=(9y+1)+(1-3y)18)
20%+(l-20%)(320-x)=320X40%19
)2(x-2)-3(4x-1)=9(1-x)21
15-(8-5x)=7x+(4-3x)22
)3(x-7)-2[9-4(2-x)]=222(x-2)-^4x-1)=9(1-A)26
)2x-]2x-56A-723627
)|-3-2x=385).86
)+x=29