Question

by Substitution method find 3x +y = 8 and aty=6

SSC CGL

Maths

Solution

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Uiven the turo equalion ( 3 x+y=8 quad 8 quad x+y=6 ) Solue by substution method Let ( cdot 3 x+y=8 rightarrow 0 ) [ 8 x+8=6 rightarrow(2) ] ( operatorname{lom}(2) cdot x+7=6 ) ( frac{1}{2} ) ( y=6-x ) Now, value obt ( y=6+x ) 'subtution in equation Q we quet [ 3 x+6-x=8 ] ( Rightarrow 2 x=8-6=2 ) [ x=1 ] 8 Value of ( x=1 ) subtuting in eavation (2) wa get ( 1+y=6 ) ( Rightarrow vec{sigma}=6-1 Rightarrow[y=5 ) So, ( x=1 quad & quad y=5 ), by sututionmel