Mathematics
Grade10
Easy
Question
Solve the following using the substitution method and find the value of x and y:
-3y = 12
5x + 5y = -45
- 5, 4
- -5, -4
- 5, -4
- -5, 4
Hint:
The linear equation in two variable is an equation with two variable and degree one.
The correct answer is: -5, -4
Step 1 of 1:
We have given two equation
-3y = 12 ……………………… 1
5x + 5y = -45
Rewrite the given equation
5(x + y) = -45
x + y = -9………………………… 2
From 1
-3y = 12
y = -4
x + y = -9
-4 + y = -9
y = -9 + 4
y = -5
In the substitution method, we first write one variable in the form of another variable.
