SOLUTION: solve using substitution method (a)y=x-7 (b) 3x+7y=5 3x-y=-1 x+4y=5 solve using elimination 3x+2y=19 x-2y=3

SOLUTION: solve using substitution method (a)y=x-7 (b) 3x+7y=5 3x-y=-1 x+4y=5 solve using elimination 3x+2y=19 x-2y=3

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Question 417848: solve using substitution method
(a)y=x-7 (b) 3x+7y=5
3x-y=-1 x+4y=5
solve using elimination
3x+2y=19
x-2y=3
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
substitution method
(a)
.....1..substitute in 2

...2

check:
.....1

(b)
.....1
.....2.solve for
.plug in 1
.....1.solve for

............find

check:
.....1

solve using elimination

.....add both
--------------------

......find

check:

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