Help can you teach me step by step how to solve this

x+51°=180°

or,x=180°-51°

x=129°

step-by-step explanation:

goog be able to you with that maybe

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.