Answer:
This system of equations was solved the Reduction Method:
Step 1: Multiply the equations by the appropriate numbers (The first equation was multiplied by 5 and the other one bye 7), so that one of the variables disappears by subtracting both equations.
Step 2: The equations were algebraically added and one of the variables disappeared (Resulting in 31a= 217).
Step 3: The variable "a" was cleared to know its value (a= 217/31= 7).
Step 4: The value "a" obtained is substituted in one of the previous equations.
Step 5: Multiply the 2 (coefficient of "a" in the first equation) by the value "a" obtained (2x7= 14).
Step 6: The independent term "14" is passed to the right member and his sign changes to negative (-14)
The final step is to clear variable "b" to know its value (b= -17/4= -2).
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Answer: 76
Step-by-step explanation: i just know
Answer:
if its suplementary its 70
Step-by-step explanation:
Parallelogram: opposite angles are equal ; opposite sides are equal
<JML = <LKJ and <MJK = <MLK
Answer is the second option (opposite angles are equal)
<JML = <LKJ and <MJK = <MLK
