Question

resolva as esquacoes de 1 grau

Answer 1

a) 2x + 1 = 5
2x = 5-1
2x = 4
x = 4/2
x = 2

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

c) 5x = 15
X = 15/5
x = 3

d) x = -3 -x
x+x = -3
x = -3/2
x = -1,5

e) 3x + x -2x = 5
4x - 2x = 5
2x = 5
x = 5/2
x = 2,5

f) x+x+8 = 22
2x = 22-8
x = 14/2
x = 7

g) 2x+7 = 17
2x = 17-7
2x = 10
x = 10/2
x = 5