2.8X+4.2(10-X)=33.6
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2.8X+4.2(10-X)=33.6
2.8X+4.2(10-X)=33.6
2.8X+4.2(10-X)=33.6
2.8x+4.2(10-x)=33.6
2.8x-4.2x=33.6-42
1.4x=8.4
x=6
2.8X+4.2(10-X)=33.6
2.8x+42-4.2x=33.6
-1.4x=-8.4
x=7
2.8X+4.2(10-X)=33.6
2.8X+4.2(10-X)=33.6
2.8X+4.2(10-X)=33.6
2.8x+4.2(10-x)=33.6
2.8x-4.2x=33.6-42
1.4x=8.4
x=6
2.8X+4.2(10-X)=33.6
2.8x+42-4.2x=33.6
-1.4x=-8.4
x=7