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2\left(3x-2\right)+x+2=40
Multiply both sides of the equation by 10, the least common multiple of 5,10.
6x-4+x+2=40
Use the distributive property to multiply 2 by 3x-2.
7x-4+2=40
Combine 6x and x to get 7x.
7x-2=40
Add -4 and 2 to get -2.
7x=40+2
Add 2 to both sides.
7x=42
Add 40 and 2 to get 42.
x=\frac{42}{7}
Divide both sides by 7.
x=6
Divide 42 by 7 to get 6.