Question

5a-5b=5
a+b=3
Método sustitución

Answer 1

a = 2

b = 1

Explanation:

5a - 5b = 5

a + b = 3

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5(a + b = 3)

= 5a + 5b = 15

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5a - 5b = 5

5a + 5b = 15

10a = 20

÷10 ÷10

a = 2

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a + b = 3

2 + b = 3

-2 -2

b = 1

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I hope this helps!

Answer 2

a=2

b=1

Explanation:

5a-5b=5

a+b=3

-a -a

b=3-a

5a-5(3-a)=5

5a-5(3)-5(-a)=5

5a-15+5a=5

10a-15=5

10a=20

a=2

2+b=3

b=1

5(2)-5b=5

10-5b=5

-5b=-5

b=1