求10道小学四年级方程计算题及答案，速给采纳

14.59+x-25.31=0 x=10.72
x-48.32+78.51=80 x=49.81
820-16x=45.5×8 x=28.5
(x-6)×7=2x x=8.4
3x+x=18 X=4.5
0.8x+2.2=6.6 x= 11
12.5-3x=6.5 x=2
1.2(x-0.64)=0.54 x=1.09
x+12.5=3.5x x=5
8x-22.8=1.2 x=3本回答被提问者采纳