Answer:
x = 15
Step-by-step explanation:
Supplementary = 180 °
Add the numbers
[tex](2x + 20) + 130 = 180[/tex]
[tex]2x + 150 = 180[/tex]
Subtract 150 from both sides of the equation
[tex]2x+150- 150 =180 - 150[/tex]
Simplify
[tex]2x = 30[/tex]
Divide both sides of the equation by the same term
[tex]\frac{2x}{2} =\frac{30}{2}[/tex]
Simplify/Solution =
[tex]x=15[/tex]
Hence, x = 15.
[RevyBreeze]
