1. Resolva as equações de 1º grau a seguir:
a) 14x + 19 = 12x + 25
b) 8x - 10 = 4x + 16
c) 6x - 24 = - 4x – 15
d) 12x + 16 = 10x + 18 +3
e) 6x + 6 = 3x + 9
f) 13x -16 = x + 8
g) 4x + 10 = 2x + 8
h) 7x + 6 = 5x + 8
i) 19x – 8 = 2x + 9
Soluções para a tarefa
Explicação passo-a-passo:
14x + 19 = 12x + 25
14x - 12x = 25 -19
2x = 6
x = 6
2
x = 3
8x - 10 = 4x + 16
8x - 4x = 16 + 10
4x = 26
x = 26
4
x = 13
2
6x - 24 = -4x + 15
6x + 4x = 15 + 24
10x = 39
x = 39
10
12x + 16 = 10x + 21
12x - 10x = 21 - -16
2x = 5
x = 5
2
6x + 6 = 3x + 9
6x - 3x = 9 - -6
3x = 3
x = 3
3
x = 1
13x - 16 = x + 8
13x - x = 8 + 16
12x = 24
x =2
4x + 10 = 2x + 8
4x - 2x = 8 - -10
2x = -2
x = -2
2
x = -1
7x + 6 = 5x + 8
7x - 5x = 8 - 6
2x = 2
x = 2
2
x = 1
19x - 8 = 2x + 9
19x - 2x = 9 + 8
17x = 17
x = 17
17
x = 1