Respuesta :

Answer:

x = 50

Step-by-step explanation:

Given

(x + 10) + (2x + 20) = 180 ( remove the parenthesis )

x + 10 + 2x + 20 = 180, that is

3x + 30 = 180 ( subtract 30 from both sides )

3x = 150 ( divide both sides by 3 )

x = 50

moazzamaliaero

Answer:

x°=50°

Step-by-step explanation:

(x+10)°+(2x+20)°=180° (remove parenthesis)

x°+10°+2x°+20°=180°

x°+2x°+10°+20°=180° (addition of variable with variable and constant with constant)

3x°+30°=180°

3x°=180°-30° (on the other side of equality 30 became negative)

3x°=150°

x°=150°÷3° (division by 3)

x°=50°

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