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2x+5=11
2x=11-5
2x=6 /:2
x=3
b)
4x+2=x-7
4x-x= -7-2
3x= -9 /:3
x= -3
c)
5z=3z+8
5z-3z=8
2z=8 /:2
z=4
2x=6
x=3
b) 4x+2= x-7
3x= -9
x= -3
c) 5z=3z+8
2z=8
z=4