Question

Solve for x!! need asap

Answer 1

answer: x = 19

assume that the line under the triangle is a straight line, and the angle of any straight line = 180°,

$(5x+1)+(8+4x)=180$ collect like-terms

$9x+9=180$ subtract

$9x=171$ divide

$x=\frac{171}{9}$

$x=19$

to make sure of the answer, plug $x$ in the equation:

$(5(19)+1 )+(8+4(19)=180\\95+1+8+76=180\\180=180$