Question

please answer this questions​

Answer 1

Answer:

6m

Step-by-step explanation:

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Answer 2

Answer:

a) m = 6

b) n = 7/9

c) x = 1

Step-by-step explanation:

a) 2m-7 = 5

or 2m = 5+7 = 12

or m = 12/2 = 6

b) 3n/5 = 7/15

or 3n×15 = 7×5

or 45n = 35

or n = 35/45 = 7/9

c) 7(x+2) = 21

or 7x + 14 = 21

or 7x = 21-14 = 7

or x = 7/7 = 1