Question

Can someone solve this?

Find the values of the variables and the measures of the angles.

Answer 1

The total of the sum of the angles has to be 180°.

We already know there is an angle which is 90°, so the sum of the two reaming angles has to be 90°. (180-90).

so: 3x+4x-1=90

7x-1=90

7x=91

x= 13

so: 3*(13)= 39

and 4*(13)-1= 51

Answer 2

I’m not 100% sure if I’m right but I just finished learning that

You would take 3x add it to 4x-1 and add it to 90 and equal it to 180 (3x+4x-1+90=180) so you would add the X variables together so 7x the your numbers with no variables so 89 (7x+89=180) then subtract 89 to 180 that would be 91 and take 91and divide it by 7x.

(Or you would take that minus on and make it negative 1 and add it to 90)