algebra2
posted by ann .
solve the systems of equation: First : 4x2y = 2 Second: y = 4x7
Should i solve by using substitution, elimination or multiply then use elimination?
Try adding them. Add up the left sides and the right sides (after rearranging the second equation) the x term will drop out, giving you
4x 2y = 2
4xy = 7
3y = 9
y = 3
For x, substitute y=3 into the first equation
x = (1/4)(2 +2y) = 1
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