Question

Atividades de Matemática
1) Resolver as equações do 1º grau:
a) X + 1 = 6
b) 5. X + 1 = 11
c) X - 1 = 13
d) 7 - X = 4.
e) - X + 1 = - 10
f) -6- X = - 11
g) 2.X + 1 = x-2​

Answer 1

a) x+1=6

x=6-1

x=5

b) 5x+1=11

5x=11-1

5x=10

x=5/10

x=0,5

c) x-1=13

x=13-1

x=12

d) 7-x=4

7-4= x

x=3

e) -x+1=-10

1+10 = -x

11=-x

ou

-x+1 =-10

-x=-10-1

-x=-11

f) -6-x = -11

-x = -11+6

-x = -5

ou

-6-x=-11

-6+11=-x

5=-x

g) 2x+1=x-2

2x-x=-2-1

2x-x= -3