Question

Solve the by substitution
Method
7x -15 y =2
x+2y =3
explain step by step please
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Answer 1

Answer:

X + 2y = 3---i

7x - 15y = 2----ii

From i

X + 2y = 3

or, X = 3-2y

putting value of X in ii

7x - 15y = 2

or, 7(3-2y) - 15y = 2

or, 21 - 14y - 15y = 2

or, 29y = 19

or, y = 19/29

putting value of y in i

X +2y = 3

or, X = 3-38/29

or X = 49/29

Ans is X = 49/29 y = 19/29

Step-by-step explanation:

substitution means u find the value of X or y in one equation and put in other

then you find out values of X and y

hope it helps

here it is said that X + 2y = 3

so, 49/29 + 2×19/29 = 49/29 + 38/29 = 87/29 = 3

hope it helps

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