x / 2 - 5x+11 / 6 =1 + 2x-4 / 3
问题描述:
x / 2 - 5x+11 / 6 =1 + 2x-4 / 3
0.1x-0.2 / 0.02 - x+1 / 0.5 = -3
答
x / 2 - 5x+11 / 6 =1 + 2x-4 / 3
去分母,得
3x-5x-11=6+4x-8
6x=13
x=13/6
0.1x-0.2 / 0.02 - x+1 / 0.5 = -3
小数化整
5x-10-2x-2=-3
3x=12
x=4已知代数式3y+12与5y-4互为相反数,求y的值。y=-1对吗?3y+12+5y-4=08y+8=0y=-1对1/30-(-2/3+3/5)÷(-2)-(2/13-1/3-1/6)×7865%(y-1)=37%(y+1)-0.82最后三道。谢谢你!不是吧……,无语1/30-(-2/3+3/5)÷(-2)=1/30-(-1/15)*(-1/2)=1/30-1/30=0-(2/13-1/3-1/6)×78=-(2/13×78-1/3×78-1/6×78)=-(12-26-13)=2765%(y-1)=37%(y+1)-0.820.65y-0.65=0.37y+0.37-0.820.65y-0.37y=0.65+0.37-0.820.28y=0.2y=5/7对吗?对