Решите уравнения: 3(x-1)=2(х+2); 3х-2=10; 6(2х+1/6)=5(2,4х+0,2); 3(х-5)-2(х+4)=-5х+1;...

Question

Решите уравнения: 3(x-1)=2(х+2); 3х-2=10; 6(2х+1/6)=5(2,4х+0,2); 3(х-5)-2(х+4)=-5х+1; 4у-1=3у+5; 2(9х+3)=3(1+6х);

Answer 1

1) 3x-1 = 2x + 4

3x - 2x = 4 + 1

x = 5

 

2) 3x = 10+2

3x = 12

x = 4

 

3) 12x + 1 = 12x +  1

12x - 12x = 1 - 1

0 = 0(?)

 

4) 3x-15-2x-8=-5x+1

3x - 2x + 5x = 1+8+15

6x = 24

x = 8

 

5) 4y - 3y = 5 + 1

y= 6

 

6) 18x + 6 = 3 + 18x

18x - 18x = 3 - 6

0 = -3(?)