Question

solving a system of linear equations using substitution
solve this system of equations using substitution:
( y = 2x - 4 )
( x + 2y = 10 )
step 1: substitute for ( y ) in the second equation. which is the resulting equation? ( x + 2(2x - 4) = 10 )
step 2: which is the next step to solve for ( x )?
step 3: which terms can be combined to isolate the variable term the left side?
options: ( x ) and ( 4x ); ( 4x ) and ( 8 ); ( x ) and ( 8 )

Explanation:

Step1: Identify like variable terms

Look for terms with $x$ on left side.

Step2: Confirm combinable terms

$x$ and $4x$ are like terms.

Answer:

x and 4x