simultaneous equations

I need to solve the following simultaneous equations by elimination and then substitution to find values for both X and Y.

-x+2y=6
6x-2y=-14

Can someone explain how this is done? Thanks.
in Algebra 2 Answers by

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2 Answers

- x + 2y = 6 ------ (1)

6x - 2y = - 14 ----- (2)

Add equations (1) and (2)

6x - x = - 14 + 6

Or

5x = - 8

Or

x = - 8/5

Put this value of x in (1)

- (-8/5) +2y = 6

Or

8/5 + 2y = 6

Or

2y = 6 - 8/5 = 22/5

Or

y = 11/5
by

x - 2 + y - 1=13

                                                                   3         4    12

by

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