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emmasim [6.3K]
3 years ago
8

Eight less than a number is the same as four the number increased by seven

Mathematics
2 answers:
yawa3891 [41]3 years ago
8 0
◆ let the number be x

according to question :

=) x-8= 4(x+7)

=) x- 8 = 4x + 28

=) 3x = -36

=) x = -12

_____________________________
bekas [8.4K]3 years ago
7 0
Let's write that as an equation. 

x-8=4x+7

So, you must solve for x by putting all of x on one side then solving for the value of one x. 

x-8=4x+7
-8=3x+7
-15=3x
-5=x

Check your work. 

(-5)-8=4(-5)+7
-13=-13
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Can someone help me on the steps for this?
Rudiy27

Answer:

x = 13

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<em>a</em> = 12

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<u>Step 2: Solve for </u><em><u>x</u></em>

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  2. Evaluate exponents:                                                                                      144 + 25 = x²
  3. Add:                                                                                                                 169 = x²
  4. [Equality] Square root both sides:                                                                 ±13 = x
  5. Rewrite:                                                                                                           x = ±13

Since we are dealing with positive numbers, we can disregard the negative root.

∴ x = 13

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Answer:

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Answer:

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