Question

Question #683b4

Answer 1

x=10

Explanation:

Answer 2

`x = 10`

Explanation:

This can be solved as a Ratio and Proportion problem
in four easy steps.

Big triangle : Small triangle :: Larger values : Smaller values

`(big triangle)/(small triangle) = (4x + 2)/(3x) = (28)/(20)`

Note: Always set up the series of equalities by writing a word fraction first.
This prevents the most common error -- namely, entering the data on the wrong side of the fraction.

This is a proportion that you can solve easily.

1) Cross multiply
`28(3x) = 20(4x + 2)`

2) Divide both sides by 4 to get smaller coefficients
`7 (3x) = 5 (4x + 2)`

3) Clear the parentheses by distributing the coefficients
`21x = 20x + 10`

4) Subtract `20x` from both sides
`x = 10` `larr` answer