need help.. 6th grade math
fan and medal!

Question

need help.. 6th grade math
fan and medal!

anonymous · Answer

Which of the values for x and y make the equation 2x + 3y + 4 = 15 true?

 x = 6, y = 3
 x = 3, y = 5
 x = 6, y = 4
 x = 1, y = 3

rhondasommer · Answer

what do you think?

anonymous · Answer

D ??

lynfran · Answer

start by substituting the given values into the equation to find out...
when x=6
2x+3y+4=15
2(6)+3y+4=15 .. solve for y to find out ... do so for each given values of x"..

anonymous · Answer

how bout y??

rhondasommer · Answer

so first subtract four from both sides of the equation

anonymous · Answer

well i did the math on all of them but i got higher numbers

rhondasommer · Answer

okay...hold on

lynfran · Answer

D is correct
when x=1
2(1)+3y+4=15
2+4+3y=15
6+3y=15
3y=15-6
3y=9
y=3

anonymous · Answer

oh ok so i was right then. thx for help!!

anonymous · Answer

i faced both of u girls

anonymous · Answer

faned

rhondasommer · Answer

she didn't do it right :/

subtract four from both sides
$$2x+3y=11$$

subtract 2x from both sides
$$3y=-2x+11$$

divide 3 to get y alone
$$y=(-2x+11)/3$$

insert x (1)
and plug in

the answer is correct but she didn't simplify the equation like she was supposed to.