Question

Oi dnv. Preciso de mais ajuda.
a) 2 . (3x-1) + 2 . (3-x)
b) 4t + 9 = 3t + 5
c) x - (x + 1) = 12 - (3x - 2)

Answer 1

a) 2.(3x-1)+2.(3-x)
6x-2+6-2x
6x-2x+4
4x+4
b) 4t+9=3t+5
4t-3t=5-9
t=-4
c) x-(x+1)=12-(3x-2)
x-x-1=12-3x+2
x-x+3x=12+2+1
3x=15
x=15/3
x=5

Answer 2

a) 6x -2 + 6 - 2x
= 4x +4
= 4 (x + 1)

b)  4t -3t = -9 +5
R =  t = -4

c) - x² - x = -36x + 24
= -x² + 35x -24 = 0