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Mathematics
Gator
22 September, 15:12
Owing each step. Wri
7 (m + 5) = 21
+4
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2
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Rory Johnston
22 September, 15:29
0
m=-2
Step-by-step explanation:
7 (m+5) = 21
m+5=21/7
m+5=3
m=3-5
m=-2
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Xavier Nguyen
22 September, 18:41
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7 (m + 5) = 21
multiply the bracket by 7
(7) (m) = 7m
(7) (5) = 35
7m+35=21
move + 35 to the other side
sign changes from + 35 to - 35
7m+35-35=21-35
7m=21-35
7m=-14
divide both sides by 7 to get m by itself
7m/7=-14/7
cross out 7 and 7, divide by 7 and then becomes 1*1*m=m
m=-14/7
answer:
m=-2
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