Question

решите уравнения.
1. (3-4x)(2+3x)=0
2. |-3,5| * |x|=|7|
3.|-4|= |x| * |-24|
4. 2(y-3) - (y+1)= 10
5. 4(x-5) - (x+12)=9

Answer 1

1. 3-4х=0
х=3/4
2+3х=0
х=-2/3
2. |х|=2
х=2
х=-2
3. 4=|х|*24
|х|=1/6
х=1/6
х=-1/6

Answer 2

1)(3-4x)(2+3x)=0

3-4х₁=0     х₁=3/4  
2+3х₂=0    х₂=-2/3  
2) |-3,5| * |x|=|7| 

IxI=7:3.5       x=2 

3)|-4|= |x| * |-24| 

IxI=4:24     x=1/6   
4) 2(y-3) - (y+1)= 10 

2у-6-у-1=10  
у=17  
5) 4(x-5) - (x+12)=9

4х-20-х-12=9  
3х=41  
х=13 2/3