Question

3х – 5y - 19 = 0,
–7x+3y +1 = 0.
please solve this equation
from substitution method​

Answer 1

Answer:

X=-2,y=-5

Step-by-step explanation:

The given system of equation is: 3x - 5y - 19 = 0 ……i -7x + 3y + 1 = 0 ……ii On multiplying i by 3 and ii by 5 we get: 9x - 15y = 57 ……iii -35x + 15y = -5 …….iv On subtracting iii from iv we get: -26x = 57 – 5 = 52 ⇒x = -2 On substituting the value of x = -2 in i we get:–6 – 5y – 19 = 0 ⇒5y = –6 – 19 = -25 ⇒y = -5 Hence the solution is x = -2 and y = -5.