The answer is 49 because since she multiplied 5 by 7 you have to do the same to yellow marbles so 7×7 = 49
21r < 7
Divide by 21
r < 7/21
10x - 35 = 15x - 10
-35 = 5x -10
-25 = 5x
-5 = x
The value of x is -5.
To eliminate a cariable in a system of equations, we multiply the variable by a factor that will make both coefficients of the variable to be equal.
Thus, we multiply the coefficient of y in the second equation by a factor that will make it equal to the coefficient of y in the first equation. i.e. multiply 1/2 by a factor that makes it equal to 3/4. and the factor is 3/2.
Therefore, the third option is the correct answer.
463 is the answer because-3 m + 4 would equal 463
