Question

解方程： 4(2x-1)-2(x+1)=24 x÷2=（3x-10）÷5

Answer 1

4(2x-1)-2(x+1)=24
8x-4-2x-2=24
6x=24+4+2=30
x=30÷6
x=5

x÷2=（3x-10）÷5
两边乘10
5x=2(3x-10)
5x=6x-20
6x-5x=20
x=20

Answer 2

4(2x-1)-2(x+1)=24
8x-4-2x-2=24
8x-2x=24+4+2
6x=30
x=30/6
x=5

x÷2=（3x-10）÷5
两边乘以10
5x=2(3x-10)
5x=6x-20
5x-6x=-20
-x=-20
x=20

Answer 3

4(2x-1)-2(x+1)=24
8x-4-2x-2=24
6x=24+4+2=30
x=30÷6
x=5

x÷2=（3x-10）÷5
两边乘10
5x=2(3x-10)
5x=6x-20
6x-5x=20
x=20

Answer 4

用十字相乘法解一元二次方程 x^2-3x-10=0 x^2-3x-10=0 (x-5)(x 2)=0 x=5或x=-2 （X-5）(X 2) (x-5)(x 2) ..

Answer 5

8x-4-2x-2=12 x=3x÷5-10÷5
6x-6=12x=0.6x-2
6x-6-(0.6x-2)=12x
5.6x+4=12x
6.4x=4
x=0.625