Question

Calculem para mim, pf

5 ( ×-2 ) -7 (× + 1) = 9 ( 3 - 2×)​

Answer 1

5.( x -2) -7.( x +1) = 9.( 3 -2.x)

5.x -5.2 -7.x -7.1 = 9.3 -9.2.x

5.x -10 -7.x -7 = 27 -18.x

5.x -7.x -10 -7 = 27 -18.x

-2.x -17 = 27 -18.x

-2.x +18.x = 27 +17

16.x = 44

x = 44 /16

x = 11 /4

Dúvidas só perguntar!

Answer 2

Olá,

$5(x - 2) - 7(x + 1) = 9(3 - 2x) \\ 5x - 10 - 7x - 7 = 27 - 18x \\ 5x - 7x + 18x = 27 + 10 + 7 \\ 16x = 44 \\ x = \frac{44}{16}$

Espero ter ajudado :-) Bons estudos.