9.2k views
3 votes
fter completing what is in the parentheses first, what would the equation look like? 2(4x + 5) – 3 = 5x(2 + 1)?

2 Answers

4 votes

Equations

Given equation:


\sf{2(4x+5)-3=5x(2+1)}

Use the distributive property on both sides:


\sf{8x+10-3=10x+5x} <- This is what the equation looks like

Combine like terms.


\sf{8x+7=15x}

Subtract 8x from both sides:


\sf{7=15x-8x}

Simplify.


\sf{7=7x}

Divide both sides by 7:


\sf{1=x}

Therefore, x = 1.

User Spasm
by
8.3k points
2 votes

Answer:

Explanation:

(4x+5)(4x+5) - 3 = 5x(3)

Honestly, what I did first was I did the box method for this equation, meaning I made a square and put 4x+5 on opposite sides of the square and solved each little box in the square using multiplication.

Now this are all the answers I got,

4x*4x= 16
x^(2), 4x*5=20x, 4x*5= 20x, 5*5=25

Now, you rewrite the equation as

16
x^(2)+40x+25-3 = 5x(3)

Distribute the same terms now.

16
x^(2)+40x+22= 15x

User Dfour
by
7.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories