Question

given a pair of limear equation 2x+3y=13 and 5x-4y=-2 find p if px+y=7​

Answer 1

Answer:

p=1

Step-by-step explanation:

by substitution method

2x+3y=13 equation---1

5x-4y=-2 equation ---2

5x=-2+4y

x=-2+4y÷5

by putting the valve of x in equation----2

we get valve of y that's 3 and again putting the valve of y in equation----2 we get valve of x that's 2

now putting the valve of x and y we get the p

px+y=7

p×2+3=7

2p=7-3

p=4÷2

p=2