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1 little math question!!! please help my friend!!!!?
Solve the equation. Justify each step.
–8x + 7 = –33
(Hint: Show your work. To justify your work, name the Property and operation you used to solve each step of the equation.)
3 Answers
- 1 decade agoFavorite Answer
k, here are the steps that i learned.
-8x + 7 = -33
now, move +7 to the other side, don't forget to change it to negative, so like this
-8x = -33 - 7
now subtract -33 -7
-8x = -40
now, move -8 to the other side, because it's multiply(to x), change it to diveide,
x = -40/-8
that / means division.
so now the answer,
x =5
your answer is 5.
so now for all togther,
-8x + 7 = -33
-8x = -33 -7
-8x = -40
x = -40/-8
x = 5
Source(s): my learnings. i'm in grade 9, and i learnend it now. hope i helped :D - 1 decade ago
-8x + 7 = -33
The aim is to find the value of x.
First make x and its coefficient which is 8 the subject of the equation by subtracting 7 from both sides.
-8x + 7 - 7 = -33 - 7
You get:
-8x = -40
Next, divide both sides by -8. This makes x, the subject of the equation and also enables you to find it's value:
-8x / -8 = -40 / -8
Your answer is given as:
x = 5.
Hope I solved it in time...
- Anonymous1 decade ago
-8x + 7 = -33
add - 7 to each side of the equation
-8x = -40
multiply both sides by -1
8x = 40
divide both sides by 8
x = 5
