find x and y : .5x-.3y=1.9 and .3x+y=.5 ?

.5x-.3y=1.9 and .3x+y=.5
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1 Answer

mi ges bout wot yu tri tu rite down...

line 1...0.5x -0.3y=1.9...or 5x -3y=19... become 3y=5x-19

line 2...0.3x +y =0.5...or y=-0.3x+0.5...or 3y=-0.9x +1.5

thus, 5x-19=-0.9x+1.5

become 5.9x=19+1.5=20.5

x=20.5/5.9=3.474576271

y=-0.3x+05.=-1.042372881+0.5

y=-0.542372881
by

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