Question

x+y=7. x-y=1. solve this equation by elimination method and substitution method​

Answer 1

Answer:

x=4 y=3

Step-by-step explanation:x

x + y = 7 , x − y = 1 Subtract y from both sides of the equation. x = 7 − y x − y = 1 Replace all occurrences of x in x − y = 1 with 7 − y x = 7 − y ( 7 − y ) − y = 1 Solve for y in the second equation. Tap for more steps... x = 7 − y y = 3 Replace all occurrences of y in x = 7 − y with 3 x = 7 − ( 3 ) y = 3 Simplify 7 − ( 3 ) . Tap for more steps... x = 4 y = 3 The solution to the system of equations can be represented as a point. ( 4 , 3 ) The result can be shown in multiple forms. Point Form: ( 4 , 3 ) Equation Form: x = 4 , y = 3