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andrew-mc [135]
3 years ago
7

How do you work out this problem?3x+15=66

Mathematics
2 answers:
vivado [14]3 years ago
4 0

3x + 15 = 66

<u>      -15    -15</u>

3x =  51

Divide 51 by 3 which equals 17.

Alex3 years ago
4 0
Get 3x by itself then divide it by the number on th other side of the equation

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I need help with this problem! Must explain why.
OLEGan [10]

Answer:

95°

Step-by-step explanation:

Angle 1 and 4 are opposite angles, thus equal, so:

3x+10 = 4x-15 =>

x = 25

Angle 1 and 4 are 85°

Angle 4 and angle 6 are called allied (or co-interior) angles, which are supplementary, i.e., angle 6 = 180 - angle 4, so angle 6 = 95°.

Angle 6 and 7 are again opposite, so angle 7 is 95° as well!

7 0
2 years ago
I need this answer as soon as possible
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