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)
3*(5*x+10) = -75 // + 75
3*(5*x+10)+75 = 0
3*(5*x+10)+75 = 0
15*x+105 = 0
15*x+105 = 0
15*x+105 = 0 // - 105
15*x = -105 // : 15
x = -105/15
x = -7
x = -7
| 4(-5k-8)=188 | | 5(1-2m)=65 | | 5p-11=0 | | 2(-4m-6)=-68 | | 7(8+4k)=280 | | 2(-1x+2)=0 | | 6(4b+7)=90 | | 4(-4+a)=-56 | | 7(6t+9)=105 | | 7(2t-7)=-77 | | 2(4d+8)=-32 | | 7(-2-2k)=154 | | 5(10+7d)=295 | | 5(4-4t)=-100 | | 7(-3t-5)=196 | | 5(6+6n)=330 | | 5(7+6w)=305 | | 4(-1+7d)=-284 | | 4(10+2x)=128 | | 2(6k+5)=34 | | 6(9-5a)=54 | | 2(-9+7t)=-74 | | 3(4-2d)=-12 | | 6(-10-3m)=12 | | 6(4+4b)=-24 | | 4(-5t+3)=-8 | | 5(2m-2)=50 | | 5(-2m+4)=-20 | | 3(8+7w)=87 | | 3(1n-9)=-54 | | 5(5+4k)=25 | | 3(6-3t)=117 |