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love history [14]
2 years ago
9

How do I do this? I'm confused.​

Mathematics
1 answer:
Flura [38]2 years ago
3 0

Step-by-step explanation:

\huge\mathcal\blue{here's \:  your \:  solution} \\  \\ x = 2y - 14 \:  \:  \: (given) \\  \\ equation \:  = 5x - 7y =  - 43 \\  \\ now \: put \: the \: value \: of \: x \: in \: equation \\  \\ 5(2y - 14) - 7y =  - 43 \\  \\ 10y - 70 - 7y =  - 43 \\  \\ 3y - 70 =  - 43 \\  \\ 3y =  + 70 - 43 \\  \\ 3y = 27 \\  \\ y = 27 \div 3 \\  \\ y = 9 \\  \\ now \: put \: the \: value \: of \: y \: in \: equation \\  \\ x = (9 \times 2) - 14 \\  \\ x = 18 - 14 \\  \\ x = 4 \\  \\ \huge\mathfrak\red{hope \: it \: helps..}

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