Question

Resolva as equações de 1° grau:
1) X + 5 = 16
2) 3x + 2x = 10
3) 5a - 2a = 9
4) 6x - 2x = 16
$5) \frac{3x}{2 } = 3$
6) 5x = 15
7) 18x - 16x = 10
8) 10x = 10 ​

Answer 1

1) X + 5 = 16   ==>x=16-5=11

2) 3x + 2x = 10 ==>5x=10 ==>x=10/5=2

3) 5a - 2a = 9  ==>3a=9 ==>a=3

4) 6x - 2x = 16 ==>4x=16 ==>x=4

5) 3x/2=3   ==>x/2=3/3  ==>  x/2=1   ==>x=2

6) 5x = 15  ==>x=15/5=3

7) 18x - 16x = 10  ==>2x=10 ==>x=5

8) 10x = 10  ==>x=1