Question

solve the following equation.​

Answer 1

5y-40=3y-12
Combine like terms
5y-3y=40-12
2y=28
==>y=14

Answer 2

EXPLANATION.

⇒ (y - 8)/3 = (y - 4)/5.

As we know that,

We can write equation as,

⇒ 5(y - 8) = 3(y - 4).

⇒ 5y - 40 = 3y - 12.

⇒ 5y - 40 - 3y + 12 = 0.

⇒ 5y - 3y - 40 + 12 = 0.

⇒ 2y - 28 = 0.

⇒ 2y = 28.

⇒ y = 14.

Value of y = 14.

                                                                                                                   

MORE INFORMATION.

(1) (x + y)² = x² + y² + 2xy.

(2) (x - y)² = x² + y² - 2xy.

(3) (x² - y²) = (x + y)(x - y).

(4) (x² + y²) = (x + y)² - 2xy.

(5) (x³ + y³) = (x + y)(x² - xy + y²).

(6) (x³ - y³) = (x - y)(x² + xy + y²).

(7) (x + y)³ = x³ + 3x²y + 3xy² + y³.

(8) (x - y)³ = x³ - 3x²y + 3xy² - y³.