Question

x-y=18
3/4 x + 3/4 y = -15/2
how do i solve this linear system with subsitution ?

Answer 1

3/4 x + 3/4y = -15/2 multiplied both sides by 4/3 >>
x + y = -60/6 = -10

then the rest should be easy

Answer 2

i have no clue how you got there . where did the -10 come from? shouldnt it be multiplied by 3/4?

Answer 3

still stuck?

Answer 4

-60 over 6 equals -10
Then you got two equations

x-y=18
x + y = -10

Answer 5

yes im still stuck .

Answer 6

x - y = 18
x + y = -10

2x = 8
x = 4