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*(5*m+3) = -294 // + 294
7*(5*m+3)+294 = 0
7*(5*m+3)+294 = 0
35*m+315 = 0
35*m+315 = 0
35*m+315 = 0 // - 315
35*m = -315 // : 35
m = -315/35
m = -9
m = -9
| 4(7w+6)=276 | | 6+x/5=31 | | 6(3n+4)=222 | | 7(-1+5m)=308 | | 3(-4-5d)=33 | | -2(3x-4)=20 | | 4(2a-7)=60 | | 4(3+5n)=-68 | | 3(7t+9)=90 | | 3(2+2t)=72 | | 6(-6-2n)=-108 | | 4(-2a-9)=-116 | | 5(2-5x)=185 | | 6(-3-2b)=66 | | 3h+2forh=10 | | 2(4m-4)=72 | | 3(7-7t)=147 | | 3(-9-x)=-36 | | 5(6-2a)=-50 | | 3(2+4x)=126 | | 5(-7x+1)=-240 | | -8(2+4n)=36+7n | | 4(5+6t)=140 | | 5(7+4m)=35 | | 2(-5-4m)=-26 | | 6(6+3k)=-18 | | 6(10+m)=72 | | 9000x-456=32(X+24) | | 3(7w+4)=159 | | 3(-8-n)=-24 | | 3(2a+2)=-54 | | 6(6+4m)=-204 |