1.

If1/4x +2y = 11/4 and -6y -x=7, what is half

Answer»


Solution :START by clearing the fractions from the first equation (by multiplying by 4) to MAKE the numbers easier to work with. Then use combination to SOLVE for y:
`x + 8y=11`
`(+ -x-6y=7)/(2y=18)`
`y =9`
TAKE half of 9 to get `9/2,` then GIRD in `9/2` or 4.5.


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