2/3(x-1)+5/7(3x-2)=5/6(4x-3)-4/21(2x+7)
问题描述:
2/3(x-1)+5/7(3x-2)=5/6(4x-3)-4/21(2x+7)
答
两边乘42
28(x-1)+30(3x-2)=35(4x-3)-8(2x+7)
28x-28+90x-60=140x-105-16x-56
118x-88=126x-161
8x=73
x=73÷8
x=9又1/8