Question

What is the solution to the system of linear equations
3x+4y=18
x+3y=11
@Tawenger

Answer 1

@kyrea do you know how to do simultaneous equation?

Answer 2

no

Answer 3

what are your choices

Answer 4

Subtract the equations to get:
2x +y = 7
Solve for y
y = 7 - 2x

Answer 5

plug y into another equation, let's plug it into eq 2.
you get x + 3(7-2x) = 11

Answer 6

there are nun

Answer 7

solve for x, x= 2

Answer 8

plug in x into our other equation to get y =7-4 = 3

Answer 9

of u make x the subject in the second equation you can substitute the value of x in that one into the first equation to get y

Answer 10

so we get, x=2 and y = 3

Answer 11

so for x+3y=11
x=11-3y

Answer 12

now use that in 3x+4y=18
so it will be
3(11-3y)+4y=18

Answer 13

of u expand the bracket and collect the like terms you can now solve for y
can you do that @kyrea

Answer 14

sure but i got the answer