Question

2a + 3b = 5
b=a-5 I need helppp

Answer 1

b = a - 5

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2a + 3b = 5

2a + 3( a - 5 ) = 5

2a + 3a - 15 = 5

5a - 15 = 5

5a - 15 + 15 = 5 + 15

5a = 20

5a ÷ 5 = 20 ÷ 5

a = 4

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b = a - 5 ===》 b = 4 - 5 ===》 b = - 1

Answer 2

4

Explanation:

2a+3b=5

2a+3(a-5)=5

2a+3a-15=5

5a=5+15

5a=20

a=4