Question

The pair of linear equations x+4y+5=0 and 5x + 20y + 25 = 0 have

Answer 1

Answer:

x+4y+5=0. multiply by 5

5x+20y+25=0

Step-by-step explanation:

5x+20y=25

5x+20y=25

0

hence pair of linear equation have 0 solution. or no solution.

Answer 2

Answer:

Add '-5' to each side of the equation.

5 + x + -5 + 4y = 0 + -5

Reorder the terms:

5 + -5 + x + 4y = 0 + -5

Combine like terms: 5 + -5 = 0

0 + x + 4y = 0 + -5

x + 4y = 0 + -5

Combine like terms: 0 + -5 = -5

x + 4y = -5

Add '-4y' to each side of the equation.

x + 4y + -4y = -5 + -4y

Combine like terms: 4y + -4y = 0

x + 0 = -5 + -4y

x = -5 + -4y

Simplifying

x = -5 + -4y