35 10x=70解方程
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/19 15:41:06
90%x-80=70%x+700.9x-80=0.7x+700.9x-0.7x=80+700.2x=150x=150÷0.2x=750
(x+120)/90=(x-120)/7070(x+120)=90(x-120)70x+8400=90x-1080090x-70x=10800+840020x=19200x=960
300+x=3X(70+x)300+x=210+3x3x-x=300-2102x=90x=45在右上角点击【评价】,然后就可以选择【满意,问题已经完美解决】了.
70%x-18%x=3.12(70%-18%)X=3.120.52X=3.12X=6
(x-120)/70=(x-120)/9070(x-120)=90(x-120)20(x-120)=0x-120=0x=120祝学习进步,望采纳~~
x+3x+10=70原题x+3x=70-10注意移项变号4x=604x由x+3x得来,60由70-10得来注意只加减乘除x前面的数字x=15由60÷15得来
(140%x*0.8-50)-x=701.12x-50-x=701.12x-x=50+700.12x=120x=120÷0.12x=1000
0.5x+x=550-703x/2=480x=480/(3/2)x=320祝您步步高升
80-x+18=70x=80+18-70x=28
20.6x=70-39.120.6x=30.9 x=30.9÷20.6 x=1.5
30%X+85=70%X+2570%x-30%x=85-2540%x=600.4x=60x=150
1.6x=70再答:x=再问:x=什么再答:43.75再答:请采纳吧
70-2x+4x=1204x-2x=120-702x=50x=25.
您好:x/70=x/60-5x/60-x/70=5x/420=5x=420x5x=2100不明白,可以追问如有帮助,记得采纳如追加其它问题,采纳本题后点击想我求助,谢谢祝学习进步!
(X+30%X)70%=X-181.3x×0.7=x-180.91x=x-18(1-0.91)x=180.09x=18x=18÷0.09x=200
(x-120)(200-x)=1600-x²+320x-24000=1600x²-320x+25600=0(x-160)²=0x-160=0x=160
30%x+70%(200-x)=200X54%0.3x+140-0.7x=1080.4x=32x=80
3+70%x=570%x=5-370%x=2x=2÷70%x=20/7
150+50x=240-70x70x+50x=240-150120x=90x=3/4
70+x=50+5x5x-x=70-504x=20x=20÷4x=5