SOLUTION: 0.3x - 2y = 4 0.4x + 0.5y = 63/19 (fraction) Solve by elimination.
Solution is an ordered pair. Use an integers or fractions for any real numbers in the expression. Please help,I
Algebra ->
Expressions-with-variables
-> SOLUTION: 0.3x - 2y = 4 0.4x + 0.5y = 63/19 (fraction) Solve by elimination.
Solution is an ordered pair. Use an integers or fractions for any real numbers in the expression. Please help,I
Log On
Question 249317: 0.3x - 2y = 4 0.4x + 0.5y = 63/19 (fraction) Solve by elimination.
Solution is an ordered pair. Use an integers or fractions for any real numbers in the expression. Please help,I don't understand it. Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 0.3x - 2y = 4
0.4x + 0.5y = 63/19 multiply by 4 & add.
1.6x+2y=252/19
0.3x-2y=4
----------------------
1.9x=4+252/19
1.9x=(4*19+252)/19
1.9x=(76+252)/19
1.9x=328/19
x=(328/19)/1.9
x=328/19*1.9
x=328/36.1 ans.
.3*328/36.1-2y=4
98.4/36.1-2y=4
-2y=4-98.4/36.1
-2y=(4*36.1-98.4)/36.1
-2y=(144.4-98.4)36.1
-2y=46/36.1
y=(46/36.1)/-2
y=-46/36.1*1/2
y=-46/72.2 ans.
(