Solve 3x − 2y = −21 and 2x + 5y = 5 using elimination

x = -5 and y = 3

Step-by-step explanation:

There are two equations :

3x − 2y = −21 (1)

2x + 5y = 5 (2)

Multiply equation (1) by 2 and equation (2) by 3.

6x - 4y = -42 ...(3)

6x + 15y = 15 (4)

Subtract equation (4) from (3) :

6x - 4y - (6x + 15y) = -42 -15

-4y -15y = -57

-19y = -57

y = 3

Put y = 3 in equation (2) :

2x + 5(3) = 5

2x = 5-15

2x = -10

x = -5

So, the value of x is (-5) and y = 3.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

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step-by-step explanation: