Sagot:
# (x, y) = (2,1) #
Paliwanag:
Given
1#color (puti) ("XXX") 2x + 3y = 7 #
2#color (white) ("XXX") x + y = 3 #
Pagbabawas # 2xx #2 mula sa 1
#color (white) ("XXX") {:(,, 2x, + 3y,, =, 7), (underline (-), underline ("("), underline (2x), underline (+ 2y), underline (")"), underline (=), underline (6)), (,,, y,, =, 1):} #
Pagpapalit #1# para sa # y # sa 2 ay nagbibigay
#color (white) ("XXX") x + 1 = 3 #
#color (white) ("XXX") rarr x = 2 #
