(X-7)÷(x-19)=3怎麼算
(X-7)÷(x-19)=3怎麼算
x-7=3x-57
50=2x
x=25
x-7=(x-19)*3怎麼解?
x-7=(x-19)*3
x-7=3x-57
3x-x=57-7
2x=50
x=25
(x-7)÷(x-19)=3
x=25
(x-19)=1%3(x-7) 怎麼解方程
(x-19)= 0.01*3(x-7)
x-19 = 0.03(x-7)
x-19 = 0.03x-0.21
0.97x =19-0.21
x =18.79/0.97
x=19.3711
(x+19)÷(X-7)=3怎麼算
(x+19)÷(x-7)=3
x+19=3(x-7)
x+19=3x-21
2x=40
x=20
(x+19)÷(x-7)=3怎麼算
(x+19)÷(x-7)=3
x+19=3(x-7)
x+19=3x-21
3x-x=19+21
2x=40
x=20
希望帮到你 望采纳 谢谢 加油~
20(x-7)-3(x-2)=19怎麼算
20(x-7)-3(x-2)=19
20x-140-3x+6=19
17x=140+19-6
17x=153
x=9
x-(x-7)÷3=19
x-(x-7)÷3=19
3x-(x-7)=57
3x-x=57-7
2x=50
x=50/2
x=25
x-19=(x+19)÷3
(x-19)*3=x+19
3x-57=x+19
2x=76
解得x=38
(x-3)×4=x-19具体怎麼解?
(x-3)×4=x-19
4x-12=x-19
3x=-7
x=-7/3
x=-2又1/3
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