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Title: How do I solve this linear equation, using the elimination method? Post by: ashyV on Aug 19, 2012 This is the equation:
12b+7f=685 9b+8f=599 This is my solution: 12b+7f=685 12b+7f=685 (9b+8f=599)-1 1/3 -12b-10 2/3f= -798 2/3 +___________________ -3 2/3f= 113 2/3 f=31 12b+7(31)=685 12b+217=685 12b=468 b=39 _____________________________ _______ But for this equation, I can't seem to find the solution: 16n+8s=2.48 14n+11s=2.69 Thank You~ Title: How do I solve this linear equation, using the elimination method? Post by: FinnBinn on Aug 19, 2012 It is probably best to try and eliminate the s terms. So, multiply the first equation by 11 and the second one by 8. You get this:
176n + 88s = 27.28 112n + 88s = 21.52 Subtract to eliminate. You get: 64n = 5.76 n = 0.09 Solve for s by substituting 0.09 for n. 16(0.09) + 8s = 2.48 1.44 + 8s = 2.48 8s = 1.04 s = 0.13 |