Question

Urgente me respondam
1) Resolva as equações do 1° grau em R
a) 2x+6=x+18
b) 5x-3=2x+9
c)3(2x-3)+2(x+1)=3X+18
D)2x+3(x-5)=4x+9
e)2x-(x-1)=5-(x-3)

por favor me respondam com calculos

Answer 1

a)

2x + 6= x + 18
2x -x= 18 -6
x= 12

b)
5x -3= 2x + 9
5x -2x= 9+3
3x= 12
x= 12/3
x= 4

c)
3(2x -3) +2(x+1)= 3x+ 18
3. 2x + 3. -3 + 2.x + 2.1 = 3x + 18
6x -9 + 2x + 2= 3x + 18
6x + 2x -3x= 18 +9 -2
5x= 25
x= 25/5
x= 5

D)
2x + 3(x -5) = 4x + 9
2x + 3.x + 3. -5= 4x + 9
2x + 3x -15= 4x + 9
2x + 3x -4x= 9 +15
x= 24

E)
2x-(x-1) = 5-(x-3)
2x -x + 1= 5 -x +3
2x -x +x = 5 +3 -1
2x= 7
x= 7/2