Question

YOUR TURN: 8. Find m

Answer 1

Check the picture below.

`(5y+3)+(4y+8)=146\implies 9y+11=146\implies 9y=135 \\\\\\ y=\cfrac{135}{9}\implies y=15 \\\\[-0.35em] ~\dotfill\\\\ 5(15)+3\implies \stackrel{ \measuredangle M }{\text{\LARGE 78}^o}\hspace{5em}4(15)+8\implies \stackrel{ \measuredangle N }{\text{\LARGE 68}^o}`