Posted by Anonymous on Tuesday, February 21, 2012 at 8:38am.
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
18x + 6y = 78
12x + 54y = 48

algebra  drwls, Tuesday, February 21, 2012 at 8:59am
y = 13  3x (from the first equation)
Substitute that for y in the second equation, and solve for x.
12x + 54*13  162x = 48
150 x = 750
Take it from there.

algebra  deb, Monday, September 17, 2012 at 1:33pm
48 divided by 2(9+3)=
parent needs answer.... i came up up with answer of 2
son has different answer of 288
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