Question

-7× + 3y para {×=1 y=-4

Answer 1

$- 7x + 3y$

$- 7 \times (1) + 3 \times (- 4)$

$- 7 - 12$

$\red{- 19}$

Answer 2

Resposta:

E = -7x + 3y

x = 1, y = -4

E = -7*1 + 3*(-4) = -7 - 12 = -19