
William W. answered 02/16/19
Math and science made easy - learn from a retired engineer
You just have to multiply them out, combine like terms, and get the variable by itself by performing the opposite operations:
2(3x-4)=22
6x - 8 = 22
add 8 to both sides
6x = 30
divide both sides by 6
x = 5
repeat the process for the other problems