Solve the system of equations: 2.2x + 0.85y = 2.251.5x + 1.75y = 2.75

majarm

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6 years ago

Solve the system of equations: 2.2x + 0.85y = 2.251.5x + 1.75y = 2.75

Solve the system of equations: 2.2x + 0.85y = 2.25
1.5x + 1.75y = 2.75

Textbook

Contemporary Business Mathematics with Canadian Applications

Edition: 11^th

Authors: Hummelbrunner, Halliday, Hassanlou, Coombs

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rmaccara

wrote...

6 years ago

2.2x + 0.85y = 2.25
   1.5x + 1.75y = 2.75
* 100    220x + 85y = 225
* 100    150x + 175y = 275
÷ 5   44x + 17y = 45
÷ 25   6x + 7y = 11
* 7   308x + 119y = 315
* 17   102x + 119y = 187
   206x = 128
   x = = 0.6213592
   2.2(0.6213592) + .85y = 2.25
   0.85y = 2.25 - 1.3669903
   0.85y = 0.8830097
   y = 1.0388345

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