Respuesta :
Answer: x=0.5
Step-by-step explanation:
20x+90=100
20x+90-90=100- 90
subtract 90 from both sides
20x=10
20x^2=10
20x^2=10
----------------
20 20
divide both sides by 20
x^2=1/2
Answer: x=0.5
Step-by-step explanation:
20x+90=100
20x+90-90=100- 90
subtract 90 from both sides
20x=10
20x^2=10
20x^2=10
----------------
20 20
divide both sides by 20
x^2=1/2