Translate into an algebraic expressions: b is decreased by 40% and decreased again by 40% . What is the result ?
1 answer:
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The value of x, y and z from the system of equation are -1, -8 and 5 respectively.
Data;
- -2x + 6y + 3z = -31
- -3y + 7z = 59
- 2z = 10
To solve this problem, we have to solve the system of equation using substitution method.
From equation (iii)
let us substitute the value of z into equation (ii)
Let's substitute the value of x and y into equation (i)
From the calculation above, the value of x, y and z are -1, -8 and 5 respectively.
Learn more on system of equations here;
Complete Question:
Solve the equation for x
Answer:
Step-by-step explanation:
Given
Required
Solve for x
Add 7 to both sides
Hence:
For ,