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4\left(2x-5\right)-9\left(x-1\right)+144=90
Multiply both sides of the equation by 36, the least common multiple of 9,4,2.
8x-20-9\left(x-1\right)+144=90
Use the distributive property to multiply 4 by 2x-5.
8x-20-9x+9+144=90
Use the distributive property to multiply -9 by x-1.
-x-20+9+144=90
Combine 8x and -9x to get -x.
-x-11+144=90
Add -20 and 9 to get -11.
-x+133=90
Add -11 and 144 to get 133.
-x=90-133
Subtract 133 from both sides.
-x=-43
Subtract 133 from 90 to get -43.
x=43
Multiply both sides by -1.