Solve for x
x=3
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25x-40-4x+7=30
Use the distributive property to multiply 5 by 5x-8.
21x-40+7=30
Combine 25x and -4x to get 21x.
21x-33=30
Add -40 and 7 to get -33.
21x=30+33
Add 33 to both sides.
21x=63
Add 30 and 33 to get 63.
x=\frac{63}{21}
Divide both sides by 21.
x=3
Divide 63 by 21 to get 3.
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