# 2a + 3b = 5 b = a - 5 What is a and b?

Answer: Since you have your b term, you can start off by plugging it in where b is in the first equation.
2a +3(a-5) = 5

Distribute the 3 to the "a" and -5.
2a + 3a - 15 = 5

Now you can combine your "a" terms
5a - 15 = 5

Next you want to get the "a" term alone so you can add 15 to both sides.
5a - 15+15 = 5+15
5a = 20

Now divide both sides by 5 to get your "a" value.
5a = 20
/5
a = 4

Now that you have your "a" value, all you have to do is plug your "a" value into either equation. I personally would choose the second equation since it's easier.

b= 4-5
b= -1

You can go back and check by plugging your answers back into the first equation as well!
2(4) + 3(-1) = 5
8 -3 = 5
5 = 5

a = 4 and b = -1

The value of a= 4 and b= -1.

2a + 3b = 5 ...... equation i

b = a - 5 ....... equation ii

Put the value of b in equation ii into equation i

2a + 3b = 5

2a + 3(a - 5) = 5

2a + 3a - 15 = 5

5a = 5 + 15

5a = 20

Divide both side by 5

5a/5 = 20/5

a = 4

The value of a = 4

Since b = a - 5

b = 4 - 5

b = -1

The value of b is -1

brainly.com/question/13165448

## Related Questions

Your weekly net income is \$380. Your total budgeted monthly expenses \$1.550,00. Do you have a surplus or deficit balance at the end of the month?

Step-by-step explanation:

Weekly net income = \$380

Monthly net income = \$380 * 4 weeks = \$1520.

Monthly expenses = \$1550

Balance = Monthly income - monthly expenses = \$-30.

The negative sign shows a deficit of \$30 monthly

ms rivera is planting flowers in her 1 meter long rectangular plant box. she divides the plant box into sections 1/9 meter in length,and plants 1 seed in each section . how many seed will she need for each plant box?

The plant box will have 9 sections, so 9 seeds are needed for the plant box.

_____
The meaning of the fraction 1/9 is that the whole is divided into 9 equal parts.

What is the halving and doubling stratergy to find 28x50

To solve this problem you must apply the proccedure shown below:

1. The halving and doubling is a multiplication strategy which is very useful to simplify products.

2. You have the following multiplication given in the problem above:

3. Then, by applying this strategy, you have that the double of 50 is 100 and the half of 28 is 14. Therefore, when you multiply them, you obtain: