Write the additive inverse of 11/221
1 answer:
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cost of pencil = x = 0.07
and cost of eraser = y = 0.03
Step-by-step explanation:
let cost of pencil = x
and cost of eraser = y
So, we have equations:
Solving both equations to find value of x and y
Let:
Multiply eq(1) with 4 and eq(2) with 3 and subtract
Putting value of x in equation 1:
So, x= 0.07 and y = 0.03
cost of pencil = x = 0.07
and cost of eraser = y = 0.03
Keywords: System of equations
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The standard form of equation is: 4x+2y = -13
Step-by-step explanation:
the standard form of a linear equation in two variables is given by:
Given equation is:
Distributing -4 into the round bracket
Adding 4x on both sides
subtracting 5 from both sides
The standard form of equation is: 4x+2y = -13
Keywords: Linear equation, variables
Learn more about linear equations at:
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