Solution:
Using Substitution Method:
-4x+7y=-5 (Equation 1)
x-3y=-5 (Equation 2)
get the value of x from Equation 2
x=3y-5 (Equation 3)
Put the value of x from Equation 3 in Equation 1
-4(3y-5)+7y=-5
-4(3y)+20+7y=-5
-12y+7y=-5-20
-5y=-25
Negative sign on both sides cancels each other
y=25/5
y=5
Putting value of y in equation 3
x=3(5)-5
x=15-5
x=10
Therefore, [x,y]=[10,5]
Using Elimination Method
-4x+7y=-5 (Equation 1)
x-3y=-5 (Equation 2)
Multiply equation 2 with -4 in order to eliminate the x term
-4(x-3y)=-5*4
-4x+12y=20 (Equation 3)
Adding Equation 1 and 3
-4x+7y=-5
-4x+12y=20
+ - = - (Change Of Sign with x and y terms)
-----------------
0x-5y = -25
-5y=-25
y=5
Substituting y’s value is Equation 1
-4x+7(5)=-5
-4x+35=-5
-4x=-40
Cancellation of negative sign on both sides
x=40/4
x=10
[x,y]=[10,5]
Division is the inverse of multiplication; therefore it depends on knowing the multiplication table.
The problem of division is to find what number times the Divisor will equal the Dividend. That number is called the Quotient. (Lesson 11.) To find the quotient, there is a method called short division.
4ax+12-3ax=25+3a
Ax+12=25+3a
Ax=25-12+3a
Ax=13+3a
X=13/a+3
Answer:
Step-by-step explanation:
Simplifying
26x = 74
Solving
26x = 74
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '26'.
x = 2.846153846
Simplifying
x = 2.846153846x
this is google respond
=74/26
x=37/13 this is mines mak me brainest plz
a) residential plan cost more by $4
b) it costs the same at 14 HCF. If they use less than this, then residential plan costs less