If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
x/2.8 < 1.3 // - 1.3
x/2.8-1.3 < 0
0.35714286*x-1.3 < 0 // + 1.3
0.35714286*x < 1.3 // : 0.35714286
x < 1.3/0.35714286
x < 3.63999997
x in (-oo:3.63999997)
(-oo:3.63999997)
| 5x^2-4y^2-20x-24y+4=0 | | 2x-3-2x^(1/2 | | x-2.3=5.8 | | y=3.4x+10 | | y+5=3y | | 8(2x-11)=-4(-7x+1) | | 1/2=10/20 | | 2(4x-5)=4x+2 | | 4x^2+8x+x+2= | | 2/3x=7/6 | | 10x^2+2x=18 | | n^2-3n-36=4 | | -4-12(4v-4)=10(-7v-3)+5v | | 2/3=6/9 | | x+20=4x | | 21x-3=5x+29 | | (5x-7)+(2x+10)= | | 7x-3y=-8 | | SQRT(2+X)=10-SQRT(X) | | 10x+16y+6+10x-6+4+18y=180 | | 27^5/3 | | -4-12(4v-4)=10(-7-3)+5v | | -10+12x=10x+24 | | 0=x^2+x+146 | | 65+75h=196.25 | | 6d-4d=10 | | (1/7)^2 | | w^2-4w-165=0 | | y+2.932=4.811 | | 65+75=196.25 | | x^2+6x+6=78 | | 2X-98=0 |