Question

solve the following pair of linear equations by the substitution method 2x+y=160,4x+2y=300​

Answer 1

Step-by-step explanation:

2x+y=160

x+y=2/160

=80

x+y=80

x=40and y=40

Answer 2

Answer:

x = 60 ; y = 40

Step-by-step explanation:

2x + y = 160 ; 4x + 2y = 300

x = 160- y /2

Put the value of x in Equation 2

4 (160-y/2 ) + 2y = 300

640 - 4y + 4y = 600

-4y +4y = 600 - 640

- y = - 40

y = 40

put value of y in Equation 1

x = 160 - y /2

x = 160 - 40 / 2

x = 120 /2

x = 60

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