Question

Resolva as seguintes equações do primeiro grau:
a)2x+4=5x+2


b)9x+3+5=2x

Answer 1

a) 2x+5x= 4-2
7x= 2
x= 7/2
x= 3,5

b) 9x+2x= 3+5
11x+ 8
x=11/8
x= 1,375

Answer 2

a) 2x-5x= 2-4
-3x= -2
x= 2/3

b) 9x-2x= -3-5
7x = -8
× = - 8/7