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 is 7:9 in simplist form
Find the area of a triangle with vertices of A(3, 3), B(5, 4), and C(0, 2).
x=square root of 880-8x
Solve the inequality. -z+20>z+20
Identity true statements about quadratic function y = ax^{2} +bx+c, where a =/= 0. (1) It reaches either maximum or minimum at the vertex. (2) Its domain consis
What is the weight of a toy car that has a mass of 0.28 kg?
What Is the Function of Tone in Poetry ?
if an organism can not reproduce,is it still considered living?why?
graph this equation 3x+4y=12
Need help to Write 4.01 as a percent