10. examine the following solution to a linear equation. do you see a mistake? identify the first line of the solution that is incorrect (if any).

original equation: 30x = 23(1 + 3) + 12x + 22

solution:
11. examine the following solution to a linear equation. do you see a mistake? identify the first line of the solution that is incorrect (if any).

original equation: 15x + 12 – 8x = -3 + 7x - 7

solution:

i dont get the question

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

oof

step-by-step explanation: