Posted by KiKi on Sunday, March 28, 2010 at 8:17pm.
7x+5y=26
x=286y
solve using substitution
okay so then 19642y+5y=26
then combined like terms so
196+37y=26
37y=222
y=6 is this part correct?

Math CAN SOMEONE PLEASE CHECK MY WORK?  Michael, Sunday, March 28, 2010 at 8:21pm
You are correct KiKi. y= 6

Math CAN SOMEONE PLEASE CHECK MY WORK?  DrBob222, Sunday, March 28, 2010 at 8:27pm
I believe that is a +6 and most would prefer that you put in another step.
like so:
7(28  6y) + 5y = 26, then
196 42y + 5y = 26
37y = 222
y=+6

Math CAN SOMEONE PLEASE CHECK MY WORK?  Louise, Sunday, March 28, 2010 at 9:43pm
You are correct. The answer is 6.
7(286y)+5y=26
19642y+5y=26
37y=222
37y/37=222/37
y=6

Math CAN SOMEONE PLEASE CHECK MY WORK?  DrBob222, Sunday, March 28, 2010 at 11:05pm
The answer is not 6, it is +6.
Both Louise and Michael subtracted incorrectly.
7(286y) + 5y = 26
19642y + 5y = 26
(42y + 5y is 37y; therefore)
196  37y = 26196 = 222
37y= 222 and
y=(222/37) = +6.
Solve for x now.
x = 286y
x = 286(+6)
x = 2836
x  8.
Now substitute x = 8 and y = +6 into the first equation.
7x + 5y = 26
7(8) + 5(+6) = 26
56 + 30 = 26
26 = 26
Substitute 6 and it won't work.

Math CAN SOMEONE PLEASE CHECK MY WORK?  Anonymous, Sunday, February 16, 2014 at 7:44pm
0y55y=6y626
Answer This Question
Related Questions
 Algebra  1. √(9y  196) + √196 = √49 My work: I squared all 3...
 HARD MATH PROBLEM (NEED HELP)  One day a person went to a hourse racing area,...
 Math Please check  The electricity meter on Donna's house read 71,236.4 kwh at ...
 Physical Science  What force is needed to give a 0.25kg arrow an acceleration ...
 math i neeeeeeed help anyone  One day, a person went to horse racing area, ...
 Math  Math Problem: Find the area of a circle that has a radius of 14 feet. ...
 Math is this right?  5/28 divided by 1/7 = ? 5 Do I flip the second fraction ...
 Algebra  Would someone please check these answers? Simplify. 3/x5+1/14/x5 ...
 Physics  What force is needed to give a 0.25kg arrow an acceleration of 196 m/...
 Physics  Nitrogen boils at 196°C. What is the corresponding temperature in the...
More Related Questions