The incomplete work of a student to solve an equation is shown below:
Step 1: 4x + 12 = 4
Step 2: ?
Step 3: x = −8 ÷ 4
Step 4: x = −2
What is the missing Step 2?
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OpenStudy (cheesenips111111):
i got d
OpenStudy (cheesenips111111):
4x = 8
4x = 16
4x = −16
4x = −8
TheSmartOne (thesmartone):
That is correct. Great work! :)
OpenStudy (cheesenips111111):
can you check more?
OpenStudy (cheesenips111111):
What is the value of z for the equation fraction 1 over 3z = −fraction 5 over 6 + fraction 1 over 6z?
5
2
−2
−5
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OpenStudy (cheesenips111111):
i got d
TheSmartOne (thesmartone):
I've seen that question so many times now. xD
Your answer is correct :)
OpenStudy (cheesenips111111):
ok
OpenStudy (cheesenips111111):
A system of equations is shown below:
Equation A: 2c = d − 8
Equation B: c = 3d + 8
Which of the following steps should be performed to eliminate variable d first?
Multiply equation B by 2.
Multiply equation A by 2.
Multiply equation B by 3.
Multiply equation A by −3.
OpenStudy (cheesenips111111):
d again
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TheSmartOne (thesmartone):
Correct :)
OpenStudy (cheesenips111111):
What is the value of z in the equation 2z + 6 = −4?
5
1
−1
−5
OpenStudy (cheesenips111111):
i got b
OpenStudy (cheesenips111111):
@TheSmartOne
TheSmartOne (thesmartone):
Nope
2z + 6 = −4
Subtract 6 on both sides
Then divide by 2 on both sides
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OpenStudy (cheesenips111111):
-1?
OpenStudy (cheesenips111111):
@TheSmartOne
TheSmartOne (thesmartone):
You're adding 6 on both sides, it seems
2z + 6 = −4
Subtract 6 on both sides
2z + 6 - 6 = -4 - 6
2z = -4 - 6
What is -4 - 6 = ?
Hint:
-4 - 6 = -1(4 + 6) = ??
OpenStudy (cheesenips111111):
idk
OpenStudy (cheesenips111111):
oh wait
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OpenStudy (cheesenips111111):
is it 5?
OpenStudy (cheesenips111111):
??
OpenStudy (cheesenips111111):
you there????????????????????????????????????????/