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D. Solve for X: show your solution:
17) x+7=9
19)
20) ​


Sagot :

Answer:

17.) x = 2

Step-by-step explanation:

x + 7 = 9 perform APE

you'll subtract -7 in both sides

because its linear equation they should be equal

x + 7 + (-7) = 9 + (-7) so this is what'll happen

and then add the like terms

so the answer is:

X = 2

because 7 + (-7) is like 7 - 7 and 9 + (-7) is like 9 - 7 so that this happens

hope it helps