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3 years ago

What is the best first step in solving the equation below.

Mathematics

2 answers:

REY [17]3 years ago

8 0

Good evening ,

______

Answer:

Subtract 3x on both sides

___________________

Step-by-step explanation:

3x−5=7x+11 ⇔ (-3x)+3x−5=+(-3x)+7x+11 ⇔ −5=4x+11 ⇔ -16=4x ⇔ -4=x.

mars1129 [50]3 years ago

7 0

Answer:

<h2>Subtract 3x from both sides</h2>

Step-by-step explanation:

3x - 5 = 7x + 11

Firs step:

add 5 to both sides: 3x - 5 + 5 = 7x + 11 + 5 → 3x = 7x + 16

subtract 7x from both sides: 3x - 7x - 5 = 7x - 7x + 11 → -2x - 5 = 11

subtract 3x from both sides: 3x - 3x - 5 = 7x - 3x + 11 → -5 = 4x + 11

subtract 11 from both sides: 3x - 5 - 11 = 7x + 11 - 11 → 3x - 16 = 7x

If you want solution.

3x - 5 = 7x + 11 <em> subtract 3x from both sides</em>

3x - 3x - 5 = 7x - 3x + 11

-5 = 4x + 11 <em>subtract 11 from both sides</em>

-5 - 11 = 4x + 11 - 11

-16 = 4x <em>divide both sides by 4</em>

-16/4 = 4x/4

-4 = x → x = -4

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