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Please help ASAP !
I keep getting this question wrong

Please help ASAP ! I keep getting this question wrong-example-1

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Answer: see below

Explanation:

Set up two equations, one for each scenario

88w + 21b = 5840

84w + 82b = 9044

Use one equation and isolate one of the variables. We'll isolate w in the first equation.

88w + 21b = 5840

88w = 5840 - 21b

w = (5840 - 21b)/88

Then substitute that into the second equation.

84w + 82b = 9044

42w + 41b = 4522 (simplified)

42((5840 - 21b)/88) + 41b = 4522

21((5840 - 21b)/44) + 41b = 4522 (simplified)

(122640 - 441b)/44 + 1804b/44 = 4522

(122640 - 441b + 1804b)/44 = 4522

122640 + 1363b = 198968

1363b = 76328

b = 56

Now that we know belts are $56, we can substitute that back into any equation and solve for w.

w = (5840 - 21b)/88

w = (5840 - 21(56))/88

w = (5840 - 1176)/88

w = 4664/88

w = 53

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