Question

2x+3y=4
5x-6y=3 substitution method ​

Answer 1

Answer:

Linear Equations: Solutions Using Substitution with Two Variables

Select one equation and solve it for one of its variables.

In the other equation, substitute for the variable just solved.

Solve the new equation.

Substitute the value found into any equation involving both variables and solve for the other variable.

Check the solution in both original equations.

Step-by-step explanation:

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Answer 2

Answer:

I assue you need answer for 8x+9y

2x+3y=4 ……….equation 1

5x+6y=7 ……….equation 2

Multiplying 1st equation by -2 and adding the result to equation 2.

-4x -6y = -8

5x+ 6y = 7

On adding, we get x = -1

Substitue x in equation 1.

2(-1) + 3y = 4

y = 2

8x + 9y = 8(-1)+9.2 = 10

If it is 8y + 9y = 8.2 + 9.2 = 34

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