Question

100 POINTS!!!!!!!!!!

Answer 1

Answer:

x = 6 , x = 4

Step-by-step explanation:

A line parallel to a side of a triangle and intersecting the other 2 sides then divides those sides proportionally, that is

$\frac{x}{18}$ = $\frac{28-21}{21}$ = $\frac{7}{21}$ = $\frac{1}{3}$ ( cross- multiply )

3x = 18 ( divide both sides by 3 )

x = 6

(14)

$\frac{x+5}{15}$ = $\frac{5x+1}{35}$ ( cross- multiply )

15(5x + 1) = 35(x + 5) ← distribute parenthesis on both sides

75x + 15 = 35x + 175 ( subtract 35x from both sides )

40x + 15 = 175 ( subtract 15 from both sides )

40x = 160 ( divide both sides by 40 )

x = 4

Answer 2

the fiest answer is x=6 for the second one the answer is x=4

Step-by-step explanation:

x+15/5x+1 =15/35 then cross multiply

1st one