2X-2.8x2.5=8.96 8X+2X=31.4 2x(X+1)=6 7.8X2.4X=1.08

2X-2.8x2.5=8.96 8X+2X=31.4 2x(X+1)=6 7.8X2.4X=1.08

2X-2.8x2.5=8.96
2x=8.96+7=15.96
x=7.98
8X+2X=31.4
10x=31.4
x=3.14
2x(X+1)=6
x^2+x-3=0
X = (- 1 + √ 13) / 2 or (- 1 - √ 13) / 2
7.8X2.4X=1.08
15.6x=0.9
x=9/156
x=3/32