Question

Resolva as equações do 1° grau

x+3=4
x-7=-10=
2x=20
x/3=-15
2x+3=7
5x-4=21

Answer 1

x = 4 - 3
x = 1
___________

x = -10 + 7
x = -3

____________

x = 20/2
x = 10

______________

x = 3 • -15
x = -45

______________

2x = 7 - 3
2x = 4
x = 4/2
x = 2

______________

5x = 21 + 4
5x = 25
x = 25/5
x = 5