Question

−4(x + 1) − 3 = −3(x − 4)

Answer 1

use distributive property on both sides:
-4x - 4 - 3= -3x + 12
combine like terms on the left:
-4x - 7 = -3x + 12
add 4x to both sides:
-7 = x + 12
subtract 12 from both sides:
-19 = x