One over three is the answer 1/3
Answer: a = -3
Step-by-step explanation: First we distribute the -2 to a and -3 to get -2a+6=12, then subtract 6 on both sides, -2a=6, finally divide by -2 on each side to get a = -3.
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Solve for x:-
7 + x = 21
x = ?
Inverse operation
21 - 7 = x
21 - 7 = 14
x ⇒ 14
Check:-
7 + x = 21
x ⇒ 14
7 + 14 = 21
Yes, correct!
x ⇒ 14