Question 17396
4(a-2)=2(a-1) first remove brackets by multiplying by number in front
4a-8=2a-2 take a terms to left and numbers to right
4a-2a=-2+8  remember sign changes when term changes side
2a=6   now divide both sides by 2
2a/2=6/2 
a=3
hope you understand
Pete