Question 142633
2D+4C=4.70 MULRIPLY THIS EQAUTION BY -2 & ADD.
4D+3C=5.10
-4D-8C=-9.40
----------------------
-5C=-4.30
C=-4.30/5
C=.86 FOR THE COFFEE.
2D+4*.86=4.70
2D+3.44=4.70
2D=4.70-3.44
2D=1,26
D=1.26/2
D=.63 FOR THE DONUT.
PROOF:
4*.63+3*.86=5.10
2.52+2.58=5.10
5.10=5.10