Question

resolva as equações considerando U=Q:
$2x + 7x - 10 = 4x + 3 - 2x$
$3.(x + 1) = 8$
$- 1.(x + 4) = 3.(x + 5)$
$3.( \frac{1 }{3} - x) - ( - 2x + 7) = - 3$
$4.(x - 6) = - 3$
$2.(3 - x) = - 4.(x - 1)$

Answer 1

a) 2x + 7x - 10 = 4x + 3 - 2x
2x + 7x - 4x + 2x = 3 + 10
7x = 13
x = 13/7
x = 1,857142...

b) 3 (x + 1) = 8
3x + 3 = 8
3x = 8 - 3
3x = 5
x = 5/3
x = 1,666...

espero ter ajudado!