Question

I need help! If you could explain that would help alot

(find x using cross multiplaction 4x+6 and x+9)
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Answer 1

x = 3. (Refresh if you cannot see the explanation.)

Explanation:

`(4x+6)/(3) = (x+9)/(2)\\\text{Cross multiply.}\\2(4x+6)=3(x+9)\\\text{Distribute.}\\8x+12=3x+27\\\text{Subtract 3x from both sides.}\\5x+12=27\\\text{Subtract 12 from both sides.}\\5x=15\\\text{Divide both sides by 15.}\\x=3\\\\\text{Proof:}\\\\(4x+6)/(3)=(x+9)/(2)\\\text{Substitute variable.}\\(4(3)+6)/(3)=(3+9)/(2)\\\text{Simplify numerators.}\\(18)/(3)=(12)/(2)\\\text{Divide both sides.}\\6=6`