Question

solve the following simultaneous linear equation 3 - 2 (3x + 4y) = x, x-3/4-y-4/5=21/10​

Answer 1

Step-by-step explanation:

Given solve the following simultaneous linear equation 3 - 2 (3x + 4y) = x, x-3/4-y-4/5=21/10​

• Given simultaneous equation to solve for x and y
• So 3 – 2(3x + 4y) = x
• So x – 3 / 4 – y – 4 / 5 = 2 1/10
• Solving we get
• 3 – 6x – 8y = x
• 7x + 8y – 3 = 0
• So x – 3 / 4 – y – 4 / 5 = 21 / 10
• 5(x – 3) – 4(y – 4) / 20 = 21/10
• 5x – 15 – 4y + 16 = 42
• 5x – 4y – 41 = 0
• Now we have both the equations
•                    5x – 4y – 41 = 0
•                    7x + 8y – 3 = 0
•     Multiply 1st equation by 7 and 2nd by 5 we get
•                     35x – 28y -287
•                     35x + 40y – 15  
• Subtracting we get
•               So    - 68 y = 272
•              Or y = - 272 / 68
•               Or y = - 4
•           Now 7x + 8(-4) – 3 = 0
•                     7x – 35 = 0
•                      7x = 35
•                  Or x = 5

Reference link will be

https://brainly.in/question/8694723

Answer 2

Answer

answer is in the photo graph