help please
2007-07-25 19:24:09 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
3p - 2q = 37
3p +12q = 9 Multiplied eq 2 by 3
then subtracted to get:
-14q = 28
q = -2
p =11
2007-07-25 19:30:08 · answer #1 · answered by 037 G 6 · 0⤊ 0⤋
3p - 2q = 37 <-- Eq 1
p + 4q = 3 <--< Eq 2
6p-4q=74 <-- Eq 3 = Eq 1 *2
7p =77 <-- Eq 3 + Eq 2
p = 11
11+ 4q = 3 <-- Substitute 11 for p in Eq 2
4q= -8
q = -2
2007-07-25 19:34:33 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
6p - 4q = 74
p + 4q = 3---ADD
7p = 77
p = 11
11 + 4q = 3
4q = - 8
q = - 2
p = 11 , q = - 2
2007-07-25 19:54:45 · answer #3 · answered by Como 7 · 0⤊ 0⤋
3p-2q=37 ..........(1)
p+4q=3................(2)
multiply (1) by 2 and thn add to eqn (2)
6p-4q=74........(3)
here (3)+(2)
p=11
q=-2
2007-07-25 19:37:18 · answer #4 · answered by student 1 · 0⤊ 0⤋
p=11
q=-2
2007-07-25 19:53:47 · answer #5 · answered by edith clara 1 · 0⤊ 0⤋
p=11
q=-2
2007-07-25 19:34:42 · answer #6 · answered by Anonymous · 0⤊ 0⤋
q=-2
p=11
2007-07-25 19:29:01 · answer #7 · answered by heezy 1 · 0⤊ 0⤋