If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
(7/4)*a = 42 // - 42
(7/4)*a-42 = 0
7/4*a-42 = 0 // + 42
7/4*a = 42 // : 7/4
a = 42/7/4
a = 24
a = 24
| 2y-10(3)=2 | | a^12b^2/10b^6 | | -0.6x+7.85=-0.4x+9.45 | | 2y-10(-3)=2 | | .519-.05/.05x100 | | 0.09x=1790 | | log[9](x+24)+log[9]x=2 | | 6+6x=9x-9 | | 8y=7y-2 | | 10(z+1)-3(z-2)=3(z-4)+3(z-3) | | 300x-0.15=500x+0.49 | | 8w+6=9w+4 | | 7x-3x=6x+14-14 | | 6cos(3t)=0 | | 11w=10w-10 | | -4-h=6gk+2 | | -12=3(-2m+8) | | 11y=12y-7 | | 0.08x=1710 | | 5x+9-8x=9x-27-3x | | 11x-10(x-2)+7=41 | | 16c-14c=37 | | 2(3x-10)=16 | | 4a^12b^2/40*b^6 | | -6(v+9)=-2v-38 | | 4(x-7.6)=9.2 | | 8(x+1)=4(2x+6)-16 | | -72/9 | | 7(3p+3)-20p=20-8 | | 100x^5-x^3=0 | | -3(d+4)= | | 6(3x-8)-6=6(x-2)+18 |