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m=-6x+5
x = a - 4b
b)m=5-6x
c)x=a-4b
d)x=-7n-6
a=2x+1-3x
a=-x+1
b)2(x+m)=m-4x+5
2x+2m=m-4x+5
2m-m=-4x+5-2x
m=-6x+5
c)-x+a+b=2a-3b-2x
-x+2x=2a-3b-a-b
x=a-4b
d)x-3(n+2)=4n+2x
x-3n-6=4n+2x
3x=4n+3n+6
3x=7n-6