Question

Ecuación doble incógnita

a)5x-2y=-12
b)x+3y=1

Answer 1

A)  Simplifying 5x + -2y = 12 Solving 5x + -2y = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2y' to each side of the equation. 5x + -2y + 2y = 12 + 2y Combine like terms: -2y + 2y = 0 5x + 0 = 12 + 2y 5x = 12 + 2y Divide each side by '5'. x = 2.4 + 0.4y Simplifying x = 2.4 + 0.4y

B)Simplifyingx + 3y = 1 Solving x + 3y = 1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3y' to each side of the equation. x + 3y + -3y = 1 + -3y Combine like terms: 3y + -3y = 0 x + 0 = 1 + -3y x = 1 + -3y Simplifying x = 1 + -3y

Answer 2

5x-2y=-12
x+3y=1

despamos x de ecuacion b

x+3y=1
x=1-3y

ahora remplazamos
5x-2y=-12
5(1-3y)-2y=-12
5-15y-2y=-12
-17y=-17
y=1

remplazamos

x=1+3y
x=1+3(1)
x=1+3
x=4

solucion
x=4
y=1

saludos