SOLUTION: 7x=3y+7and 5y=6x+11

Question 499310: 7x=3y+7and 5y=6x+11

Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
EQ1. 7x - 3y = 7
EQ2. 6x - 5y = -11
.
Multiply EQ1 by 5 and EQ2 by 3
.
35x - 15y = 35
18x - 15y = -33
.
Subtract EQ2 from EQ1
.
17x = 68
x = 4
.
Substitute x=4 into EQ1
.
7x -3y = 7
28 -3y = 7
-3y = -21
y = 7
.
Always check your work.
Substitute these values into EQ2.
(You cannot use EQ1 again.)
.
5y = 35
6x = 24
6x+11 = 35
5y = 6x+11 true
.
Answer:
x = 4
y = 7
.
Done.
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