Question

Equaçao do 1° Grau Quanto e : a) 7x=28 b)3x+5=-4 c)5x-7=4x+3

Answer 1

a) 7x=28
x=28/7
x=4

b) 3x+5=-4
3x=-4-5
x= -9/3
x=-3

c)
5x-7=4x+3
5x-4x= +3+7
x= 10

Answer 2

a) 7x = 28
x =  28 
      7
x = 4

B) 3x+5= -4
3x= - 4 - 5
3x= - 9
x= - 9 
     3
x= -3

c) 5x-7 = 4x + 3
5x - 4x = 3 + 7
x = 10

Bons estudos..(;