*30 points* i will give brainliest circle the step where the error has occurred. explain why it is an error and what should have been done to solve the problem correctly. given | 2(10−13x)+9x=−34x+60 step 1: distribute | 20−26x+9x=−34x+60 step 2: combine like terms | 20−17x=−34x+60 step 3: subtraction property of equality | −17x=−34x+40 step 4: addition property of equality | −51x=40 step 5: division property of equality | x=−51/40

Step 4

Step-by-step explanation:

Step 4 is incorrect because when you add the number from the right side, -34, you make it a positive coming to the left side, -17, which stays the same. so 34+-17, will give you 17.

This will make Step 4: Addition property of equality: -17x=40

Therefore Step 5 is also incorrect, and should look like: Step 5: Division Property of Equality: x= 40/-17

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb