giovanni justifies what is expression -4x - 8 is equivalent to -2( x + 1) - 2 ( x + 3 ) by letting x equal 3 in both expressions what is the value of each expression when x equals 3
Accepted Solution
A:
Hello!
You put 3 in for x in both equations
Equation 1 -4(3) - 8 =
Multiply
-12 - 8 = -20
The answer is one of the ones with -20 ------------------------------------------------------------------------------------------------------ Equation 2 -2(3 + 1) - 2(3 + 3)
Do what is in paraenthesis
-2(4) - 2(6)
Multiply
-8 - 12 = -20 ------------------------------------------------------------------------------------------------------ The answer is C) -20 and -20