Question

Resolva as equações em R:

a)3x+4=2x+10

b)2.(x+4)+10=2.(x+3)-4x

c)x/2 = 12/3

d)24 x + 12-13x+4=-105

e) 4.(2x+3)=2.(x+4)

f) x-1/3 + 2x = x+4/2


obrigado a galera que pode me ajudar nisso agradeço

Answer 1

a) 3x+4=2x+10
3x - 2x = 10 - 4
x = 6


b) 2.(x+4)+10=2.(x+3)-4x
2x + 8 + 10 = 2x + 6 - 4x
2x - 2x - 4x = 6 - 8 - 10
-4x = -12
x = 3


c) x/2 = 12/3
x = 2(12/3)
x = 24/3
x = 8


d) 24 x + 12-13x+4=-105
24x - 13x = -105 -12 -4
12x = 121
x = 121/12



e) 4.(2x+3)=2.(x+4)
4.2x + 4.3 = 2.x + 2.4
8x + 12 = 2x + 8
8x - 2x = 8 - 12
6x = -4
x = -4/6
x = -2/3



f) x-1/3 + 2x = x+4/2
x + 2x - x = 4/2 + 1/3
2x = 2 + 1/3
2x = 6/3 + 1/3
2x = 7/3
x = 7/(2.3)
x = 7/6