54.1k views
5 votes
-3(-2x + 20) + 8(x + 12) = 92

User Neok
by
7.7k points

2 Answers

7 votes
3(-2x + 20) + 8(x + 12) = 92

use distributive property to remove parentheses:
6x + (-60) + 8x + 96 = 92
can also be written as:
6x - 60 + 8x + 96 = 92

combine like terms:
14x + 36 = 92

get the variable on one side:
14x + 36 - 36 = 92 - 36
14x = 56

divide both sides by 14:
14x/14 = 56/14
x = 4

check your work by substituting 4 in for x in the original equation:
-3(-2(4) + 20) + 8(4 + 12) = 92
-3(-8 + 20) + 8(16) = 92
24 + (-60) + 128 = 92
24 + 128 - 60 = 92
152 - 60 = 92
User Rex Roy
by
8.3k points
4 votes
-3(-2x + 20) + 8(x + 12) = 92

-3(-2x + 20) + 8(x + 12) = 92-example-1
User Hiveer
by
8.6k points

No related questions found