Combine like terms to give 3n + 2
3n + 2n = 25 5n = 25 n = 5
7-2n=n-147-2n+2n=n-14+2n7=3n-147+14=3n21=3n21/3=3n/37=n
3 + 3n = 9 + 2n + 4n n = -2
It is 12n2 + 3n - 58
5n = 2n + 3n .
3n - 2n = n 3n - 2n = (3 - 2)n = 1n = n
-2
2n+3n+7=-41
Combine like terms to give 3n + 2
3n + 2n = 25 5n = 25 n = 5
let the number be n. Then: 2n = 3n ⇒ 2n - 2n = 3n - 2n ⇒ 0 = n ie, the number is zero.
7
7-2n=n-147-2n+2n=n-14+2n7=3n-147+14=3n21=3n21/3=3n/37=n
3 + 3n = 9 + 2n + 4n n = -2
5n + 12 = 3n Try to get all expressions with n on the left side 5n + 12 - 3n = 3n - 3n 2n + 12 = 0 Try to get rid of 12 on the left side 2n + 12 - 12 = -12 2n = -12 n = -12/2 = -6
2n+5 = 3n 5 = 3n-2n 5 = 1n check 2n+5 = 3n 2x5+5 = 3x5 10+5 = 15 15 = 15