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Solve the simultaneous equations: 4y + 3x = 12 and y = 2x - 4
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1 vote
Solve the simultaneous equations:
4y + 3x = 12 and
y = 2x - 4

User Oleg Melnikov
by
7.9k points

1 Answer

2 votes
Put equation two into the first equation by replacing values of y with 2x-4

4(2x-4)+3x=12
8x-16+3x=12
11x=28
x=28/11

Put the value of x into the original equation to find the value of y.

y=2(28/11)-4
y=56/11-4
y=12/11

x=28/11 and y=12/11
User Shiffty
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