For number 3 x=90 because all triangles sum up to 180 so 180-53-37 is 90
For number 4 x=94
Again same math but with different numbers
180-73-13=94
In the process of laying out the question, you have given us important facts about the shaded area and the unshaded area. Now step back for just a second. If they're that deeply involved in the question, do you honestly expect that anybody can answer the question without seeing the picture of them ? ! ?
You can add, subtract, and multiply them. These three operations obey the rules for integers. There's a polynomial division algorithm that fills formally the same role as the usual division algorithm for integers. Polynomials added to, subtracted from, or multiplied by other polynomials yield only polynomials. Likewise, integers added to, subtracted from, or multiplied by other integers yield only integers.
This equation has an infinite number of solutions, so it will be categorized as an identity.
I think you’re right because I put the same thing on my quiz