Respuesta :

ameliak2024

Answer:

11

Step-by-step explanation:

5x+15+20=90

5x+35=90

-35 from both sides

5x=55

divide both sides by 5

x=11

S1NGH

Answer:

x = 11

Step-by-step explanation:

→ Make equation

5x + 15 + 20 = 90

→ Simplify

5x + 35 = 90

→ Minus 35 from both sides

5x = 55

→ Divide both sides by 5

x = 11

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