Question 15916
I'll do first two you try rest
7x+1=4x+19 get x-terms on left,numbers on right
7x-4x=19-1 notice sign changes when side changes,do sum
3x=18 divide both sides by 3 to get x
x=6.
6x-4=3x+8
6x-3x=8+4
3x=12
x=4.
The rest follow same method.Good Luck
Pete