Solving Linear Equations

How do you solve these two equations for x?
1.)  60 - 2x = 70 – 4x

2)  20 - 8x = 30 - 16x

1.) 60 - 2x = 70 - 4x
60 + 2x = 70  {added 4x to both sides}
2x = 10  {subtracted 60 from both sides}
x = 5  {divided both sides by 2}

2.) 20 - 8x = 30 - 16x
20 + 8x = 30  {added 16x to both sides}
8x = 10  {subtracted 20 from both sides}
x = 10/8  {divided both sides by 8}
x = 5/4  {reduced}

Ask Algebra House