If it's not what You are looking for type in the equation solver your own equation and let us solve it.
m in (-oo:+oo)
(7*m)/5 = 21 // - 21
(7*m)/5-21 = 0
7/5*m-21 = 0 // + 21
7/5*m = 21 // : 7/5
m = 21/7/5
m = 15
m = 15
| X/4x4 | | 5/4x-4=12 | | 7x=8x-10 | | (X+3)+3(x-1)=o | | 7m/5212 | | 9x+3y=(-6) | | -24=4(k+3) | | -8=4/5m | | -11b=0 | | 9xy+4xy= | | 4(x-1.7)=48 | | (64x^3×y^2/x^-2×y)^1/3 | | 8x-4x+9=x-2+11 | | (-1)-(3)-(-7)= | | -2n-10n+3=-n+5 | | -15+x=-11 | | -(7y-4)= | | 37/18-9/11=d | | 2+734+1233=15 | | 8n+15=5n+7n | | 2x^4y^3-10x^3y^4=0 | | -4(y+3)=2y-6+2(3y+5) | | 9x+6x=90 | | 8x+7+12x=5x-43 | | 1=5x-6x | | 3.6x-6.5=0.7 | | -3x+18=33 | | -2=2(y-4)-4y | | 20.00+0.50x=1.50x | | 9x^2-4x+121= | | 15-4a=a-5 | | (6z+75)-(2z-2)=78 |