Question

I’m confused on this one

Answer 1

The triangles are similar. Set the two triangle's measurements equal to each other

8/10 = (x - 1)/(x + 2)

Cross multiply

8(x+ 2) = 10(x - 1)

Distribute the numbers

8(x) = 8x

8(2) = 16

10(x) = 10x

10(-1) = -10

8x + 16 = 10x - 10

Isolate the x. Subtract 16 from both sides, and 10x from both sides

8x (-10x) + 16 (-16) = 10x (-10x) - 10 (-16)

8x - 10x = -10 - 16

Simplify. Combine like terms

-2x = -26

Isolate the x. Divide -2 from both sides

-2x/-2 = -26/-2

x = -26/-2

x = 13

13 is your answer for x

hope this helps

Answer 2

The final answer is :

X = 13

:)