Jeff is 10 years old. His younger brother, Ben is 4 years old. How old will jeff be when he is twice as old as Ben.
2 answers:
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Answer: see attachment
<u>Step-by-step explanation:</u>
The standard form of a linear equation is: Ax + By = C
where A, B, and C are INTEGERS.
The 1st, 3rd, & 4th equations are in the form Ax + By = C
The 2nd, 5th, & 6th equations are NOT in standard form.
