Luca shows his work in finding the solution to 2−6x=5−5(x−1). after checking his answer in the original equation, he found that it did not work. where did he make a mistake?

probably made an error with positive negative signs

Step-by-step explanation

remember what you do on one side of the equal sign you do to the other side.

2−6x=5−5(x−1)

multiply 5(x-1) to get below

2 - 6x = 5 - 5x + 5

combine like terms on right side 5+5=10

2 - 6x = 10 - 5x

subtract 2 from each side of equal sign

-6x = 8 - 5x

add 5 x to each side to cancel out right side

-1x = 8

now divide by -1 on each side to get the variable alone

x = -8

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

b. hoped i'm right lol

step-by-step explanation: