201k views
5 votes
Solve for x: 15x + 121 = 256

Solve the inequality: 4x + 8 > 2x - 10

Solve for x: 5x + 7 = 42

User Pfn
by
8.2k points

2 Answers

3 votes

Answer:

x=9, x>-9, x=7

Explanation:


15x + 121 = 256 \\ 15x = 256 - 121 \\ 15x = 135 \\ (15x)/(15) = (135)/(15) \\ x = 9


4x + 8 > 2x - 10 \\ 4x - 2x > - 10 - 8 \\ 2x = - 18 \\ (2x)/(2) = ( - 18)/(2) \\ x > - 9


5x + 7 = 42 \\ 5x = 42 - 7 \\ 5x = 35 \\ (5x)/(5) = (35)/(5) \\ x = 7

User Amit Mohanty
by
9.1k points
5 votes

Answer:

Explanation:

15x + 121 = 256 the answer is x = 9

4x + 8 > 2x - 10 the answer is x > -9

5x + 7 = 42 the answer is x = 7

User Roman Soviak
by
7.6k points

No related questions found

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