10m15n10 because you just multiply everything by 5
2/3=14/21 and 5/7=15/21 so 14/21+15/21=29/21 or 1 and 8/21
Step-by-step explanation:
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Angle QRT is an exterior angle to the triangle. The rule is that the exterior angle of a triangle is equal to the sum of its remote interior angles. Those remote interior angles are angle RTS and angle TSR. So our equation is

. We can remove the parenthesis and simplify by combining like terms to get 9x = 5x + 9 + x and 9x = 6x + 9 and 3x = 9. That means that x = 3.
Need drawing not sure where m is