Find the missing number to the equation has no solution -2x+10 =_x+13

-2

Step-by-step explanation:

if you have -2, you add 2x on both sides, the x cancel out and you get 10=13, which is wrong. there is no solution.

if you have any other number in the blank, you can bring all of the x to one side easily. if you have -2, you can't do that

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.