(7/9)y-10=-3

Solution for (7/9)y-10=-3 equation:

(7/9)y-10=-3

We move all terms to the left:

(7/9)y-10-(-3)=0


Domain of the equation: 9)y!=0

y!=0/1

y!=0

y∈R


We add all the numbers together, and all the variables

(+7/9)y-10-(-3)=0

We add all the numbers together, and all the variables

(+7/9)y-7=0

We multiply parentheses

7y^2-7=0

a = 7; b = 0; c = -7;
Δ = b2-4ac
Δ = 02-4·7·(-7)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-14}{2*7}=\frac{-14}{14}
=-1
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+14}{2*7}=\frac{14}{14}
=1
$