Need help on this please help

a. t = 98

b. b = 32

Step-by-step explanation:

4/7t - 20 = 36r; r = 1

4/7t - 20 = 36(1)

4/7t = 36 + 20

4/7t = 56

7/4 x 4/7t = 56 x 7/4

t = 98

2/5k = 1/2b - 12; k = 10

2/5(10) = 1/2b - 12

4 = 1/2b - 12

4 + 12 = 1/2b

16 = 1/2b

16 x 2/1 = 1/2b x 2/1

b = 32

Check:

a.) 4/7t - 20 = 36r; r = 1; t = 98

4/7(98) - 20 = 36(1)

(56) - 20 = 36

36 = 36 ✅

b.) 2/5k = 1/2b - 12; k = 10; b = 32

2/5(10) = 1/2(32) - 12

2/5(10) = (16) - 12

4 = 16 - 12

4 = 4 ✅

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.