Question
Write and solve an equation: Find a number such that 5 less than the opposite of the number is 3 times the sum of the number and -7
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Answer to a math question Write and solve an equation: Find a number such that 5 less than the opposite of the number is 3 times the sum of the number and -7
Fred
4.4112 Answers
1. Write the equation:
-x - 5 = 3(x - 7)
2. Expand the right side:
-x - 5 = 3x - 21
3. Addx
-5 = 4x - 21
4. Add 21 to both sides:
16 = 4x
5. Divide by 4:
x = 4
2. Expand the right side:
3. Add
4. Add 21 to both sides:
5. Divide by 4:
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