4 years ago

Can you please help me answer this question 7n + 5 = 5n + 25

Mathematics

2 answers:

Andrei [34K]4 years ago

6 0

7n+5=5n+25 subtract 5n from both sides

2n+5=25 subtract 5 from both sides

2n=20 divide both sides by 2

n=10

natali 33 [55]4 years ago

3 0

Simplifying 7n+5=5n+25
reorder the terms: 5 + 7n = 5n +25 combine like terms :7n + -5n =2n, 5 + 2n = 25 + 5n + -5n
combine like terms: 5n + -5n = 0, 5 + 2n = 25 + 0, 5 + 2n = 25
add -5 to each side of the equation : 5 + -5 + 2n + 25 + -5, 2n = 25 + -5
combine like terms : 25 + -5 = 20 2n += 20

divide each side by 2

n=10
ANSWER: n = 10

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The sum of 3 numbers is -4. The second number decreased by the third is equal to the first. The sum of the first and second numb

dybincka [34]

A+b+c= -4
b-c=a
a+b= -5
you can substitute a+b for -5.
-5+c= -4
c=1
you can also substitute a for b-c and c for 1
b-c+b+c= -4
2b= -4
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then substitute b for -2
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3 0

4 years ago

The hockey team can spend at most $1, 450 for its new uniforms. If the store charges an initial fee of $330 plus $35 per uniform

Reptile [31]

Answer: 32 or less uniforms can be purchase.

Step-by-step explanation:

The situation can be described by the inequality 330 + 35x ≤ 1450

Solve for x to find how many uniforms can be purchased.

330 + 35x ≤ 1450

-330 -330

35x ≤ 1120

x ≤ 32