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x plus 3 equals 7. This is the math problem. The answer is 4. This is basic pre-algebra/algebra. It's solving equations by adding or subtracting; therefore you must determine which value is the solution of the equation. If you can't figure this out by seventh/eighth grade, you need to ask your math teacher about it, because I'm 7th grade, and I'm moving on past pre-algebra soon.
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Earn +20 ptsQ: Solve x for x 3 7?
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How do you solve 3x plus 3 equals x plus 7?
Solve for x. 3x + 3 = x + 7 2x + 3 = 7 2x = 4 x = 2 Check it. 6 + 3 = 2 + 7 It checks.
How do you solve the variable -3 plus x equals 7?
-3+x=7. x=10
Solve the proportion 3 over 7 equals x over 56?
3/7=x/56 168=7x 24=x
Solve x plus 3 equals 10?
X + 3 = 10. X + 3 - 3 = 10 - 3 X = 7 Double check your solution. X + 3 = 10 7 + 3 = 10 10 = 10 So X + 3 = 10 when X = 7.
Solve x - 7 - 9 equals -3?
x - 7 - 9 = -3x - 16 = -3x = 13
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