Question

(78 - x) + ( 84 - 3x)

Answer 1

78-x+84-3x calculate that and you get
162-4x

Answer 2

Hey there!

(78 - x) + (84 - 3x)

= 78 - x + 84 - 3x

= 78 - 1x + 84 - 3x

= (78 + 84) - (1x - 3x)

= (78 + 84) - (x - 3x)

= (1x - 3x) + (78 + 84)

= (x - 3x) + (78 + 84)

= x - 3x + 78 + 84

= -4x + 162

Therefore, your answer should be:

-4x + 162

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)