Question

resolva as equações do 1° grau a)7x+8=4x-10 b)5(x+1)-3(x+2)=0 c)2x-1=-3+x+4 d)3x-5=-2x+1​

Answer 1

7x + 8= 4x - 10

7x - 4x= - 10 - 8

3x= - 18

x= - 18/3

x= - 6

_______________

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

5x + 5 - 3x - 6= 0

5x - 3x= 0 - 5 + 6

2x= 1

x= 1/2

x= 0,5

_______________

2x - 1= - 3 + x + 4

2x - x= - 3 + 4 + 1

1x= 2

x= 2/1

x= 2

_______________

3x - 5= - 2x + 1

3x + 2x= 1 + 5

5x= 6

x= 6/5