解方程.b5w,z.R3B:w2Z)G'U7M(B1s3l5A2t:L+r(I
（1） 4x+2/5x=88=8^/})a:R'f'J.b5w,z.R3B:w2Z)G'U7M(B1s3l5A2t:L+r(I
算式：提示.E3L3H,d.b5w,z.R3B:w2Z)G'U7M(B1s3l5A2t:L+r(I
（2） 50%x-30%x=34=*d,g9P;E8A9W/`)K:T3l5o:@;S.b5w,z.R3B:w2Z)G'U7M(B1s3l5A2t:L+r(I
算式：提示9i1[.Z0Q5k)s.b5w,z.R3B:w2Z)G'U7M(B1s3l5A2t:L+r(I