Question

Can anyone show me how to solve this?
.1g+3.75m=7.36 and 8.2g+21m=73 Thank you

Answer 1

.1g+3.75m=7.36
8.2g+21m=73

method of determinates

D= .1*21-8.2*3.75 figure that.

m= (.1*73-8.2*7.36)/D figure that.

g= (7.36*21-73*3.75)/D figure that

Answer 2

I'm sorry but this does not help. WHat is D?

Answer 3

I usually get rid of nasty decimals ...

.1g+3.75m=7.36 --> 10g + 375m = 736 --> g = (736-375m)/10

8.2g+21m=73 ----> 82g + 210m = 730

10g +375m = 736 -times 410 --> 4100g + 153750m = 301760

82g + 210m = 730 -times 50 --> 4100g + 10500m = 36500
subtract them:
143250m = 265260
m = 265260/143250 = 8842/4775

sub into 82g + 210m = 730
82g + 210(8842/4775) = 730
...
g = 3973/955

Answer 4

Thanks alot Reiny that was super helpful. I have a math test tomrrow!