Question

Find x. i need this fast guys

Answer 1

x=5

Explanation:

A triangle= 180

53+78+10x-1=180

Combine like terms

130+10x=180

Subtract by 130 on both sides

10x=50

Divide by 10 on both sides

x=5

Answer 2

5

Explanation:

58+78=131

180-131=49

10(5)-1

=5