Owing each step. Wri7(m + 5) = 21
2 answers:
Answer:
m=-2
Step-by-step explanation:
7(m+5)=21
m+5=21/7
m+5=3
m=3-5
m=-2
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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