Question

how to do this question ​

Answer 1

Answer:

x=14 and the longest side (6x-2) is 84 units long

Step-by-step explanation:

Since the sides of a triangle equal 180 we know that all the sides given will add up to equal 180 so we start by setting up the problem like this

(2x+12)+(5x-9)+(6x-2)=180

From there we add like terms to get

13x+1=180

Subtract the 1 from the both sides

13x=179

Then divide by the 13

x=13.769

Round up and you get 14

The next step is to plug in 14 for each x