Solve for 'a' using the elimination method:
3a + 4b = 2
4a - 3b = -14
2007-07-08 05:28:45 · 4 answers · asked by andy s 2 in Science & Mathematics ➔ Mathematics
on my homework my choices are
a = 2
a=3
a=-2
a=-3
2007-07-08 05:41:26 · update #1
9a + 12b = 6
16a - 12b = - 56-----ADD
25a = - 50
a = - 2
-6 + 4b = 2
4b = 8
b = 2
a = - 2 , b = 2
2007-07-08 05:44:28 · answer #1 · answered by Como 7 · 0⤊ 0⤋
the equation is
3a+4b=2
4a-3b=-14
solving elimination method
then the value of
a=-2 & b=2
2007-07-08 12:46:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
multiply the first equation by 3
9a+12b=12
multiply the second equation by 4
16a-12b=-56
add the first equation to second
25a=-44
a=-44/25
2007-07-08 12:37:05 · answer #3 · answered by chris 3 · 0⤊ 0⤋
-a+1b=-12
2007-07-08 12:31:45 · answer #4 · answered by tab7240 2 · 0⤊ 0⤋