7+x=5
x=5-7
x=-2
=============
3+z=-12
z=-12-3
z=-15
==================
y+11=-11
y=-11-11
y=-22
====================
|-15|*u=|-600|
15u=600
u=600:15
u=40
=======================
|-33|=y:|-11|
33=y*11
y=33:11
y=3
================
2x+3=-1
2x=-1-3
2x=-4
x=-4:2
x=-2
===============
3x+1=-8
3x=-8-1
3x=-9
x=-9:3
x=-3
===============
3x=-24
x=-24:3
x=-8
==============
x+(-2)=-8
x-2=-8
x=-8+2
x=-6
=================
y+11=18
y=18-11
y=7
=================
-3+u=-12
u=-12+3
u=-9
=========================
3*z=-210
z=-210:3
z=-70
==========================
v:(-7)=6
v=-6/7
==============
-180:z=-90
z=-180:-90
z=2
===================
x+7=-9
x=-9-7
x=-16
=============
5x-7=-3
5x=-3+7
5x=-4
x=-4/5
===================
2x+12=0
2x=-12
x=-12:2
x=-6
============
-2x+1=3
-2x=3-1
-2x=2
x=-1
================
19+z=0
z=-19
====================
-5+x=11
x=11+5
x=16
====================
80=(-8)*t
t=-10
===================
x:(-3)=-5
x=-5*(-3)
x=15
==============
3x-25=-7
3x=-7+25
3x=18
x=18:3
x=6
=================
-2x+3=8
-2x=8-3
-2x=5
x=-5/2
=============================
x:(-5)=40
x=40*(-5)
x=-200
=====================
-2x+3=-9
-2x=-9-3
-2x=-12
x=6
