Question

olve the simultaneous equations by substitution
4x + 7y = 2
7y= 8 - 2x

Answer 1

Answer:

x= -3

y= 2

there are two equations so

1. multiply the first equation with one and the second equation with minus one
2. after getting the products find the values + 7 Y and minus 7 y get cancelled
3. and we are left with 2 X is equals to minus 6 which gives us the value of x which is -3
4. now having the value of x we can take any equations 1 or 2 and find the value of y by putting in the value of x given as I have taken the first equation to find the value of Y
5. the last step is we just have to put the value of x as I have put 4 - 3 + 7 Y is equals to 2 which gives us the answer of why after after solving
6. y=2

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