Solve the linear equations by elimination and substitution methods. 3x-5y-4 (1) 9x =2y+7 (2)
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by elimination method,
3(3x-5y-4)
1(9x-2y+7)
= 9x-15y-12
= 9x-2y+7
-. +. -
0x-13y-19
-13y=19
y=19/13
x=3x-5(19/13)=4
3x -95/13=4
3x= 4+95/13
3x= 52+95/13
3x= 147/13
x=147/13/3
x=49/13
3(3x-5y-4)
1(9x-2y+7)
= 9x-15y-12
= 9x-2y+7
-. +. -
0x-13y-19
-13y=19
y=19/13
x=3x-5(19/13)=4
3x -95/13=4
3x= 4+95/13
3x= 52+95/13
3x= 147/13
x=147/13/3
x=49/13
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