Question

By Substitution Method Plzz Step by Step .....​...

Answer 1

ANSWER

x=-8.05 y=5.41

Step -by-step explanation :

3x-5y-19=0 ........eq1

-7+3y+1=0...........eq2

3x-5y=19......eq3

-7x+3y=-1.......eq4

from eq 1

3x-5y=19

3x=19+5y

x=19+5y/3..........eq5

substitute the value of x in equation 2

-7x+3y=-1

-7x(19+5y/3)+3y=-1

-133-35y/3+3y=-1

-133-35y+9y=-1

-133-24y/3=-1

cross multipled both and the equation is

-133-24y=-3

-24y=-3+133

-24y=130

y=-130/24

y=-5.41

put the value of y in equation 3

x=19+5y/3

x=19+5*-5.41

x=19-27.05

x=-8.05