3.03 Solving systems of equations by elimination
Adaptive
Worksheet
Interactive practice questions
Consider the following system of equations.
| Equation 1 | $3x+7y=-6$3x+7y=−6 |
| Equation 2 | $2x-y=-17$2x−y=−17 |
Suppose we want to solve this system by using the elimination method and eliminating $y$y.
a
What value can we multiply Equation 2 by so that the coefficients of $y$y in each equation are opposite numbers?
b
What equation do we get when we multiply the second equation by $7$7?
Easy
1min
Consider the system of equations
| Equation 1 | $2x-1.8y=5.9$2x−1.8y=5.9 |
| Equation 2 | $0.65x+0.7y=-0.02$0.65x+0.7y=−0.02 |
When solving the system, which of the following steps would you first take to change the decimal coefficients into integer coefficients?
Easy
< 1min
We are going to use the elimination method to solve the following set of equations.
Easy
3min
We are going to use the elimination method to solve the following set of equations.
Easy
3min
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