Question

resolva as seguintes equaçoes de 1 grau

a) -3(3x -42) =2 (7x -52)
b) x+3 + x + 2 = -1
2 3 2

Answer 1

a) - 3(3x - 42)= 2(7x - 52)
- 9x +126= 14x-104
- 9x- 14x = - 126 -  104
-23x= -230
x= -230
     - 23
x=10

x+3

b)x+3+x+2= -1
x+x= -3-2-1
2x= -6
x= -6
     2
x= -3