Let x, y be numbers.
The addition identity property states that 0 + x = x.
The commutative property states that x + y = y + x
May makes $23.25, Inez makes $2325, and Carolyn makes $232.50
The answer on E2020 is A: Rolling a six-sided number cube 24 times and recording if a 4 comes up.
The right answer is Option D.
Step-by-step explanation:
Given equations are;
2x+4y=3 Eqn 1
x+3y=13 Eqn 2
When we use subtraction-addition method, we make one of the variables same with opposite signs so that only one variable remains after addition or subtraction.
In the given problem, we will multiply Eqn 2 with "-2" so that the x variables become equal and then we can add both the equations and solve for y.
Therefore,
The first step will be to multiply the second equation by -2 to solve the linear system of equations.
The right answer is Option D.
Keywords: linear equations, subtraction
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