Respuesta :
8x - y = -9
8x + 9 = y...so we sub in 8x + 9 for y in the 2nd equation
4x - 3y = -22
4x - 3(8x + 9) = -22 <===
8x + 9 = y...so we sub in 8x + 9 for y in the 2nd equation
4x - 3y = -22
4x - 3(8x + 9) = -22 <===
Answer:
-20x -27 is the required expression.
Step-by-step explanation:
whenever we are to solve the system of equations by substitution method we have to write one variable in the form of other so as to get the value of unknowns
here, we are given two expressions:
[tex]8x-y=-9[/tex]
And [tex]4x-3y=-22[/tex]
We have to substitute x in terms of y because the equation should be equivalent to y we will put [tex]y=8x+9[/tex] in [tex]4x-3y=-22[/tex]
we will get:
[tex]4x-3(8x+9)[/tex]
[tex]\Rightarrow 4x-24x-27[/tex]
[tex]\Rightarrow -20x-27[/tex] is the expression we will get after expression equivalent to y.