50
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Any of them. To get 50 to 30 you could... subtract 20 add -20 divide by 5/3 multiply by 3/5
2X + 50 = 5X - 10 subtract 2X from each side 50 = 3X - 10 add 10 to each side 60 = 3X divide each side by 3 20 = X check 2(20) + 50 = 5(20) - 10 40 + 50 = 100 - 10 90 = 90 checks
Divide the 20 over 50 by 10
When you divide 50 by 10, the result is 5. This means that 10 goes into 50 a total of 5 times. In other words, if you add 10 five times (10 + 10 + 10 + 10 + 10), you will arrive at 50.
3n+20=170 subtract 20 3n=150 divide by 3 n=50