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Solve the simultaneous equations: 3a-2b=14 12a+9b=39
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Solve the simultaneous equations:

3a-2b=14
12a+9b=39

User Mladen Milosavljevic
by
8.9k points

1 Answer

1 vote
Use elimination
Multiply first equation by 4
12a - 8b = 56
12a + 9b = 39
Subtract both
-17b = 17
b = -1
Plug in -1 for b
3a - 2(-1) = 14
3a = 12, a = 4
Final answer: a = 4, b = -1
User Marcus Noon
by
7.9k points
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