3x+7=-8 plz help i will mark brainliest

x = -5

Step-by-step explanation:

3x + 7 = -8

> subtract 7 on both sides

3x = -15

> divide 3 both sides

x = -5

x=-5

Step-by-step explanation:

subtract 7 from both sides

3x = -8 - 7

simplify -8 - 7 to -15

3x = -15

divide both sides by 3

x = -15 / 3

simplify 15 / 3 to 5: and you get.

x=-5

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180