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kati45 [8]
3 years ago
9

Solving systems of equations algebraically.

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0
Start with x=y+13 then plug it in so you get 4(y+13) + 2y = 10
Then you get 4y + 52 +2y =10
Then you add you similarities to get 6y + 52= 10
Subtract 52 from both sides gets you 6y=-42. Then you divide and you get y=-7.
Then you plug that into your original equation so 4x + 2(-7) = 10
4x + -14 = 10
4x = 24
X= 6
Y= -7
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A computer system is priced at $3200. A man buys
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(i) Monthly installment is $21.53 approximately.

(ii) Total amount man has to pay is $3716.8

(iii) Extra money he had to pay for buying the computer on hire is $516.8

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therefore, monthly payment = 2720 × 9.5 × 1/ 12

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(ii) Total amount man has to pay = ?

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