Question

b) 3x+2y=6 x-y=10 c) 5x+2y=10 3x-2y=6 d) 6x+3y=12 3x-3y=6 e) 4x+5y=10 2x-2y=2 f) 2x=y=7 x+3y= -7 ajuda

Answer 1

b)3x+2y=6_x-y=10_x=10+y_3x+2y=6_3(10+y)+2y=6_30+3y+2y=6_3y+2y=6-30_5y=-24_y=-24/5_x=10+y_x=10+(-24/5)_x=26/5
c)5x+2y=10_3x-2y=6_8x=16_x=16/8_x=2_5x+2y=10_5(2)+2y=10_10+2y=10_2y=10-10_2y=0_y=0/2_y=0
d)6x+3y=12_3x-3y=6_9x=18_x=18/9_x=2_6x+3y=12_6(2)+3y=12_12+3y=12_3y=12-12_3y=0_y=0/3_y=0
e)4x+5y=10_2x-2y=2_2x=2+2y_x=2+2y/2_y=1+y_4x+5y=10_4(1+y)+5y=10_4+4y+5y=10_4y+5y=10-4_9y=6_y=6/9_x=1+y_x=1+6/9_x=5/3
f)2x-y=8_x+3y=-7_x=-7-3y_2x-y=7_2(-7-3y)-y=7_-14-6y-y=7_-6y-y=7+14_-7y=21_7y=-21_y=-3_x=-7-3y_x=-7-3(-3)_x=-7+9_x=2
Espero ter te ajudado