How do you solve this?

Step-by-step explanation:

✍️ (consecutive interior angles are supplementary)

Solve for x

Add like terms

Add 18 to both sides

Divide both sides by 11

✅

✍️ (alternate interior angles are congruent)

Solve for y

Collect like terms

Divide both sides by 2

✅y = 7.5

✍️ (linear pair angles)

Plug in the value of y

Add like terms

Subtract 33 from each side

Divide both sides by 3

Square both sides

is means division by fractions

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.