Question

1) Determine a raiz de cada equação a seguir (resolva descobrindo o valor do termo x desconhecido), considerando U = Q:

n) 3. (x +2) + 5 = x + 12 R:1/2


o) x + 4.(x - 1) = 9 - 2.(x + 3) R: 1


p) 5.(3x - 2) = 2.(6x + 3) R: 16/3

q) 2.(3x-1) + 2 .(3-x)= 0 R: -1

r) 7.(x-1) = 2.(3x+1) R:9
s) 2.(3 - y) + 7.(2 - y) = 15 - 4y R:1
t) 2.(x - 2) + 5.( 2 - x) + 6.(x + 1)= 0 R:-4
u) 3. (x - 2) - (1 - x) = 13 R; 5

i) 5m - 7 - 2m - 2 = 0 R:3 v) x - (x + 1) = 12 - (3x - 2) R;5

j) y - 8 + 5y = -3 +2y + 7 R:3 x) x/2 = 12/3 R: 8


k) 4t + 9 = 3t + 5 R:-4
w)2x/3 + 1/2 = x/4 - 3/2 R:-24/5
l) -10 + 4 - 2x = -4x - 7 R; -1/2

m) 10x - 8 - 2 = 7x - 4 R: 2 y) x/3 - 1 + 3/4 = x/2 - 1/4 R: x=0

Answer 1

n) 3x+6+5=x+12
3x-x=12-11
2x=1
x=1/2