Solve for x
x=0
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-7+x=-4-20x-3
Use the distributive property to multiply -4 by 1+5x.
-7+x=-7-20x
Subtract 3 from -4 to get -7.
-7+x+20x=-7
Add 20x to both sides.
-7+21x=-7
Combine x and 20x to get 21x.
21x=-7+7
Add 7 to both sides.
21x=0
Add -7 and 7 to get 0.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 21 is not equal to 0, x must be equal to 0.
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