Question

pls ans this tooooo.......



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Answer 1

Answer:

1.)3(n+6)=(3*5)+(3*6)

3n+18=8+18

3n=8+18-18

3n=8

n=8/3

2.)(7*4)+(n*3)=7(4+3)

21+3n=12*7

3n=84-21

n=63/3

n=21

3.)(9*8)+(8*8)=(9+8)n

81+64=9n+8n

145=17n

145/17=n

n=8.52

4.)(12*9)-(12*6)=n(9-6)

108-72=9n-6n

36=3n

36/3=n

n=12

5.)15(42-n)=(15*42)-(15*36)

630-15n=630-540

630-15n=90

90+630=15n

720/15=n

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