Sagot :
SOLUTION:
2x - 13 = 9
2x = 9 + 13
2x = 22
2x/2 = 22/2
x = 11
Checking:
2x - 13 = 9
2(11) - 13 = 9
22 - 13 = 9
9 = 9
TRUE
ANSWER: 11
SOLUTION:
2x - 13 = 9
2x = 9 + 13
2x = 22
2x/2 = 22/2
x = 11
Checking:
2x - 13 = 9
2(11) - 13 = 9
22 - 13 = 9
9 = 9
TRUE
ANSWER: 11