chandraniesomwaru chandraniesomwaru
  • 26-01-2020
  • Mathematics
contestada

If a+3b=13 and a+b=5 the value of b is

Respuesta :

texaschic101
texaschic101 texaschic101
  • 26-01-2020

Answer:

b = 4

Step-by-step explanation:

a + 3b = 13

a + b = 5 .....multiply by -1

=============

a + 3b = 13

-a - b = -5 (result of multiplying by -1)

=============add

2b = 8

b = 8/2

b = 4 <====

a + b = 5

a + 4 = 5

a = 5 - 4

a = 1

Answer Link

Otras preguntas

what time is 14hours after 3:00 a.m
1. Homes in France look like they could be in any city in the United States because they are so similar. True False 2. Many homes have more th
What is the definition of "occupation"?
what was not a reason for westward expansion in the americas in the 1800's? A. high birth rates, B. decreased immigration, C. improved transportation, D. a desi
1. (–10x3 + 30x – 20) ÷ (–5x + 5) (1 point)2x2 – 2x + 4 –2x2 – 2x – 4 –2x2 + 2x + 4 2x2 + 2x – 4 2. The width w of a rectangular swimming pool is x + 4. Th
What is the gcf of 68,76 and 99?
What is freedom of spech
23. Tensing of the muscles that does not involve joint movement is called: Isometric stretching Static stretching Isotonic stretching PNF stretching 24. S
how do you write 4 out of 20 into a decimal
Do little lizards lay eggs? Or give birth?