Question 778960
Please help me solve these problems. Solve the systems of linear equations. 

1/2x + 1/3y= 1/3    
1/6x+1/3y=2/9
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Multiply by whatever it takes to eliminate the fractions.
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4x +10y=-28
6x + 7y =6
Don't put 2 equations on one line.  Use something to separate problems.
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-1.25x+0.5y=-1.6875    0.2x-0.5y=0.9

solve the equation
4x-3y=4               
12x-9y=12
Divide the 2nd eqn by 3, compare it to the 1st.