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svet-max [94.6K]
2 years ago
8

Help me to do this math question ​

Mathematics
2 answers:
viva [34]2 years ago
5 0

Answer:

b) q

c) 7a

d) 2y

Step-by-step explanation:

b) q must be added to p to get p+q

c) 12a-7a = 5a

d) 2y is subtracted from 3x

Ivanshal [37]2 years ago
3 0

Answer:

1. q because p+n=p+q, meaning that q would be the answer

2. 7a because is you subtract by 7a from 12a, you get 5a

3. 2y because 3x-n=3x-2y, in which n=2y, which satisfies the equation 3x-2y

Step-by-step explanation:

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Two factors of 12 add up to 16 what are they
sergij07 [2.7K]
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You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 2x - 3y = 12
suter [353]

Answer:

A.

Step-by-step explanation:

The Elimination Method is the method for solving a pair of linear equations which reduces one equation to one that has only a single variable.

If the coefficients of one variable are opposites, you add the equations to eliminate a variable, and then solve.

If the coefficients are not opposites, then we multiply one or both equations by a number to create opposite coefficients, and then add the equations to eliminate a variable and solve.

When multiplying the equation by a coefficient, we multiply both sides of the equation (multiplying both sides of the equation by some nonzero number does not change the solution).

So, option B is not allowed (it is not allowed to multiply only one part of the equation)

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