Question

Pls solve this simultaneous step by step :
3a + 2b = 6
3b - 2a =10

Answer 1

Explanation:

3a+2b=6

3b-2a=10

3a+2b=6 multiply by 3

-2a+3b=10 multiply by 2

9a+6b=18

-4a+6b=20 (-)

13a= –2. divide b.s by 13

a= –2/13

3b-2a=10

3b-2(-2/13)=10

3b+4/13=10

3b=10-4/13

3b=126/13. divide b.s by 3

b=42/13

Answer 2

Explanation:

The simaltaneous equation are:

● 3a + 2b = 6

● 3b - 2a = 10

Graph both equations

While graphing use x instead of a and y insread of b in the graphing tool

The solutions are the coordinates of the intetsection point between the two lines.

The intersection point coordinates are approximatively (-0.15,3.2) picture below

Wich means:

● x = a = -0.15

● y = b = 3.2