-5m + 6 = 2m - 1.

Please help lol, thanks!

Let's solve your equation step-by-step.

−5m+6=2m−1

Step 1: Subtract 2m from both sides.

−5m+6−2m=2m−1−2m

−7m+6=−1

Step 2: Subtract 6 from both sides.

−7m+6−6=−1−6

−7m=−7

Step 3: Divide both sides by -7.

m=1

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: