How do you solve 2/3x + 4y = -1 and 1/2x - 3y = -9/4?
1 Answer
Apr 29, 2018
#x=-3#
#y=1/4#
Explanation:
Given -
#2/3x+4y=-1# -------------(1)#xx 3#
#1/2x-3y=-9/4# ------------(2)#xx4#
#2x+12y=-3# -------------(3)
#2x-12y=-9# --------------(4) ---#(3) = (4)#
#4x=-12#
#x=(-12)/4=-3#
#x=-3#
Substitute
#2(-3)+12y=-3#
#-6+12y=-3#
#12y=-3+6=3#
#y=3/12=1/4#
#y=1/4#
