Question

solve the system of equations by substitution 8y-1=x and 3x-2y

Answer 1

to solve by substitutions, we must solve one of the equations for a single variable, and use that answer to substitute in for the other equations

for example

x + y = 4
2x - y = 0 (these are made up by the way)

we would solve the first equation x+y = 4 for a single variable

so subtract y from both sides

x = 4-y

so now we would plug (4-y) wherever there an x in the second equation

2(4-y) - y = 0

8 - 2y - y = 0

8 - 3y = 0

now solve for y

-3y = -8

y = 8/3

so now that we know what y is, plug your value for y in the equation that we solved for x originally

x = 4 - y

x = 4 - (8/3)

x = 4/3


so x = 4/3

and y = 8/3

apply the same concept to your problem. just follow it step by step