Graph the system. {sx + y = 1 2y = 4 2

Solve the equation for

Substitute the given value of x into the equation  

Collect like terms

Move constant to the right hand side and change its sign

Subtract the numbers

Divide both sides of the equation by

Substitute the given value of into the equation

When there is a _ in front of an expression in parentheses , change the sign of each term of the expression

Add the numbers

The possible solution of the system is the ordered pair

Check if the given ordered pair is the solution of the system of equations

Simplify the equalities

Since all of the equalities are true, the ordered pair is the solution of the system

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step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.