Question

solve the following system of equation by substitution method
(ii) 7x - 2y = 1
3x + 4y = 15​

Answer 1

7*2-2*7=1

3*1+4*3=15 ans

Answer 2

Step-by-step explanation:

so in this question

7x−2y=1

3x+4y=15

so first multiply the first equation by 2

We get 14x−4y=2

now add the first and second equations

14x−4y+3x+4y=15+2

17x=17

so x=1

put x in any equation get y

y=3