SOLUTION: When x = 1 and y = - 2 find the value of 7x - 4y
Algebra.Com
Question 25398: When x = 1 and y = - 2 find the value of 7x - 4y
Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
7x-4y
7(1)-4(-2)
7 + 8
15
jon
RELATED QUESTIONS
61(3x+4y) = 29(7x+8y)
Find the value of x and... (answered by Edwin McCravy,MathTherapy)
factorise x^2+4y^216z^2+4xy+16yz+8zx and find the value when x=2, y=-1 and... (answered by ikleyn,Shin123)
If 2^x = 4^y = 8^z and (1/2x)+(1/4y)+(1/8z)=4, find the value of... (answered by Alan3354)
If 2^x = 4^y = 8^z and 1/(2x) + 1/(4y) + 1/(8z) = 4, find the value of... (answered by Alan3354)
If 3x-5y/7x-4y = 3/4, find the value of {{{ x/y }}}.
Many... (answered by jsmallt9)
Find the x- and y-intercepts of the line with the given equation
1. x - y - 3= 0
2. -7x (answered by Mr_Mathman)
Find the value of 3a when a= -4
Find the value of 20x when x= 10
Evaluate a-13 when... (answered by praseenakos@yahoo.com)
Find the values of x and y that solve the following system of equations:
8x+7y=12... (answered by ankor@dixie-net.com)
If m<2 = 7x + 7, m<3 = 4y, and m<4 = 112, find the values of x and... (answered by Fombitz)