3 years ago

2x+3y=23 3x-y=7 Solve for x

1 answer:

5 0

2x + 3y = 23...........................(1)

3x - y = 7 Multiply by 3:-

9x - 3y = 21 Adding this to equation (1):-

11x = 44
x =

Plug this into equation (1):-
2(4) + 3y = 23

3y = 15
y = 5

Answer is x = 4, y = 5

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15+9=? (5+3) What number is missing from the expression?

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Answer:

<h3> $\boxed{ \boxed{ \bold{ \mathsf{3}}}}$ </h3>

Step-by-step explanation:

Let the missing number be 'x'

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⇒ $\mathsf{15 + 9 = 5x + 3x}$

Swap the sides of the equation

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Collect like terms

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