解一元一次方程,合并同类项与移项.解方程(1)-3x=3-x/9 (2)6y-3/4=4y+5/4 (3)3x+4=x/3 (4)-2x=2-x/6(5)2.5y+10y=6.5y-3 (6)1/2x-1=2/3x+3/2 (7)0.5x-0.7=6.5-1.3x要有移项,合并同类项,系数化为1这些过程
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![解一元一次方程,合并同类项与移项.解方程(1)-3x=3-x/9 (2)6y-3/4=4y+5/4 (3)3x+4=x/3 (4)-2x=2-x/6(5)2.5y+10y=6.5y-3 (6)1/2x-1=2/3x+3/2 (7)0.5x-0.7=6.5-1.3x要有移项,合并同类项,系数化为1这些过程](/uploads/image/z/979671-39-1.jpg?t=%E8%A7%A3%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%2C%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%E4%B8%8E%E7%A7%BB%E9%A1%B9.%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%881%EF%BC%89-3x%3D3-x%2F9+%EF%BC%882%EF%BC%896y-3%2F4%3D4y%2B5%2F4+%283%293x%2B4%3Dx%2F3+%284%29-2x%3D2-x%2F6%285%292.5y%2B10y%3D6.5y-3+%286%291%2F2x-1%3D2%2F3x%2B3%2F2+%287%290.5x-0.7%3D6.5-1.3x%E8%A6%81%E6%9C%89%E7%A7%BB%E9%A1%B9%EF%BC%8C%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%EF%BC%8C%E7%B3%BB%E6%95%B0%E5%8C%96%E4%B8%BA1%E8%BF%99%E4%BA%9B%E8%BF%87%E7%A8%8B)
解一元一次方程,合并同类项与移项.解方程(1)-3x=3-x/9 (2)6y-3/4=4y+5/4 (3)3x+4=x/3 (4)-2x=2-x/6(5)2.5y+10y=6.5y-3 (6)1/2x-1=2/3x+3/2 (7)0.5x-0.7=6.5-1.3x要有移项,合并同类项,系数化为1这些过程
解一元一次方程,合并同类项与移项.
解方程(1)-3x=3-x/9 (2)6y-3/4=4y+5/4 (3)3x+4=x/3 (4)-2x=2-x/6(5)2.5y+10y=6.5y-3 (6)1/2x-1=2/3x+3/2 (7)0.5x-0.7=6.5-1.3x
要有移项,合并同类项,系数化为1这些过程
解一元一次方程,合并同类项与移项.解方程(1)-3x=3-x/9 (2)6y-3/4=4y+5/4 (3)3x+4=x/3 (4)-2x=2-x/6(5)2.5y+10y=6.5y-3 (6)1/2x-1=2/3x+3/2 (7)0.5x-0.7=6.5-1.3x要有移项,合并同类项,系数化为1这些过程
(1)-3x=3-x/9
去分母得
-27x=27-x
-27x+x=27
-26x=27
x=-27/26
(2)6y-3/4=4y+5/4
去分母得
24y-3=16y+5
24y-16y=5+3
8y=8
y=1
(3)3x+4=x/3
去分母得
9x+12=x
9x-x=-12
8x=-12
x=-3/2
(4)-2x=2-x/6
去分母得
-12x=12-x
-12x+x=12
-11x=12
x=-12/11
(5)2.5y+10y=6.5y-3
12.5y-6.5y=-3
6y=-3
y=-1/2
(6)1/2x-1=2/3x+3/2
去分母得
3x-6=4x+9
3x-4x=9+6
-x=15
x=-15
(7)0.5x-0.7=6.5-1.3x
0.5x+1.3x=6.5+0.7
1.8x=7.2
x=4