4x-4-5x=7-x+5
Combine like terms:
4x-5x-4 = 7+5-x
9x-4 = 12-x
add x to both sides of the equation:
9x+x-4 = 12-x+x
10x-4 =12
Add 4 to both sides:
10x-4+4 =12+4
10x = 16
Divide both sides by 10
10x/10 =16/10
x = 1.6
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