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ICSE Class 8 Answered

Sir please solve this question
 
2a-3b equal to 5
2a-5b equal to -1
Asked by amankeshari12345 | 26 Jan, 2016, 09:23: PM
answered-by-expert Expert Answer
2 straight a minus 3 straight b space equals space 5............ left parenthesis 1 right parenthesis 2 straight a minus 5 straight b space equals space minus 1............ left parenthesis 2 right parenthesis Subtracting space eq space left parenthesis 2 right parenthesis space from space eq space left parenthesis 1 right parenthesis we space get space space space 2 straight a space minus space 3 straight b space equals space 5 space space space 2 straight a space minus space 5 straight b space equals space minus 1 minus space space space space space plus space space space space space space space space space space plus minus negative negative negative negative negative negative negative negative negative negative negative negative negative space space space space space space space space space space space space space 2 straight b space equals space 6 therefore straight b space equals space 3 Substitute space straight b space equals space 3 space in space eq space left parenthesis 1 right parenthesis space we space get 2 straight a space minus space 3 left parenthesis 3 right parenthesis space equals space 5 2 straight a space equals space 14 straight a space equals space 7 So space the space values space of space straight a space nad space straight b space are space 7 space and space 3 space respectively.
Answered by Vijaykumar Wani | 27 Jan, 2016, 10:52: AM
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