Hilary's first installment is $80
What is linear equation in one variable?
Let x be any variable then ax + b = c b is an linear equation in one variable
where a, b, c are constants then we get solution for x as
x=(b-c)/a
Given that Hilary has bought a television on a twelve month installment plan let the installments be x₁, x₂, x₃, x₄,.......... , x₁₂
given x₁ = x₂ = x₃ = 2x₄=2x₅=2x₆=2x₇=2x₈=2x₉=2x₁₀=2x₁₁=2x₁₂
x₄=x₁/2=x₆=x₇=x₈=x₉=x₁₀=x₁₁=x₁₂
and x₁+x₂+x₃+x₄+.......+x₁₂= $600
Then we have got an linear equation in
x₁,
3x₁+9(x₁/2)=600
(6x₁+9x₁)/2=600
15x₁=1200
x₁=$80
Learn more about linear equation athttps://brainly.com/question/11897796
#SPJ1
