Solve the following equations using substitution. 2x - 3y = 6
2x - y = 7

Check your answer using LS and RS method.

x = 3.75

y= 0.5

Step-by-step explanation:

2x and 3y and 6

2x and y and 7

the difference between those two is 2y and 1

because 3y-y = 2y and 7-6 = 1

2y=1    y = 0.5

2x - 3 = 6 is also 6 + 3y = 2x

3(0.5) = 1.5

6 + 1.5 = 75.5

2x = 7.5

x= 3.75

check:

2(3.75) = 7.5

3(0.5) = 1.5

7.5-1.5 = 6

2(3.75) = 7.5

y= (0.5)

7.5-0.5= 7

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.