add 6 to both sides 
cross out -6(+6) and add 22+6=28
add 3x on both sides 
x+3x=4x and cross out (+3x)-3x
divide 4 on both sides
cross out 4 leave x and divide 28 and 4 =7
Solve for x:
X- 6 = -3x + 22...
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