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padilas [110]
3 years ago
7

Find the value of r 4(x-3) -r +2x =5(3x-7) -9x Please help me

Mathematics
1 answer:
lbvjy [14]3 years ago
6 0

4(x-3)-r+2x=5(3x-7)-9x\ \ \ |\text{use distributive property}\\\\(4)(x)+(4)(-3)-r+2x=(5)(3x)+(5)(-7)-9x\\\\4x-12-r+2x=15x-35-9x\\\\(4x+2x)-12-r=(15x-9x)-35\\\\6x-12-r=6x-35\ \ \ \ |-6x\\\\-12-r=-35\ \ \ \ |+12\\\\-r=-23\to\boxed{r=23}

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