3 years ago

Need help please thanks

Mathematics

1 answer:

Marina86 [1]3 years ago

4 0

Answer:

a) t=98

b) b=32

Step-by-step explanation:

a) 4t/7 -20=36r

r=1

4t/7-20=36

=36

4t-140=252

4y=392

t=98

b) 2k/5=b/2-12

k=10

20/5=b/2-12

8=b-24

b=32

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