126k views
5 votes
Help lol -30=5(x+1) x= ?

User Ladenedge
by
3.4k points

2 Answers

7 votes

1.Distribute

-30=5(x+1). x


-30=5x^(2)+5x

2. Move terms to the left side


-30=5x^(2) +5x


-30-(5x^(2) +5x)=0

3. Rearrange terms


-30-5x^(2) -5x=0


-5x^(2) -5x-30=0

Hope this helps! Sorry if I'm wrong

User Pawka
by
3.1k points
2 votes


\huge\text{Hey there!}


\large\text{ORIGINAL EQUATION}\downarrow


\large\textsf{ -30 = 5(x + 1)}


\large\text{TURN the EQUATION}


\large\textsf{5(x + 1) = -30}


\large\text{DISTRIBUTE \textsf{5} WITHIN the PARENTHESES}


\large\textsf{5(x) + 5(1) = -30}


\large\textsf{5(x) = \bf 5x}\\\large\textsf{5(1) = 5}


\rightarrow\large\textsf{5x + 5 = -30}


\large\text{NEW EQUATION: \textsf{5x + 5 = -30}}


\large\text{SUBTRACT \textsf{5} to BOTH SIDES}


\large\textsf{5x + 5 - 5 = -30 - 5}


\large\text{CANCEL out: \textsf{5 - 5} because that gives you \textsf{0}}


\large\text{KEEP: \textsf{-30 - 5} because that helps you solve for your \textsf{x-value}}


\large\textsf{-30 - 5 = \bf -35}


\large\text{NEW EQUATION: \textsf{5x = -35}}


\large\text{DIVIDE \textsf{5} to BOTH SIDES}


\mathsf{(5x)/(5)= (-35)/(5)}


\large\text{CANCEL out: }\mathsf{(5x)/(5)}\large\text{ because that gives you the value of \textsf{1}}


\large\text{KEEP: }\mathsf{(-35)/(5)}\large\text{ gives you the \textsf{x-value}}


\large\textsf{x = }\mathsf{(-35)/(5)}


\large\text{SIMPLIFY ABOVE \& YOU HAVE YOUR x-value}


\boxed{\boxed{\large\textsf{ANSWER: \huge \bf x = -7}}}\huge\checkmark


\text{Good luck on your assignment and enjoy your day!}

~
\frak{Amphitrite1040:)}

User Marievi
by
3.3k points