PLEASE HELP!

Find the x value.

72

Step-by-step explanation:

every angle in a triangle adds up to 180

57 + 51 + x = 180

x = 72

The answer to the question is:

x=72°

Step-by-step explanation:

The total angles of a triangle is 180°

x+51°+57°=180°

x+108°=180°

x=180°-108°

x=72°

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.