-7 + 2(x-3) = -7+2x-6 = 2x - 13
15 + 10 - 13 - 5 = 7
13+-12--5 = 6
X= -2
2√50 + 13√200= 2√[(25)(2)] + 13√[(100)(2)]= 2(√52)(√2) + 13(√102)(√2)= 2(5)√2 + 13(10)√2= 10√2 + 130√2= (10 + 130)√2= 140√2
-15
-7 + 2(x-3) = -7+2x-6 = 2x - 13
-7n - 8 + 6 = 13 - 2 Add 2 to each side: -7n - 8 + 6 + 2 = 13 simplify: -7n = 13 n = -13/7 = -16/7
8/9 + 3/9 + 2/9 = 13/9 = 1 4/9
15 + 10 - 13 - 5 = 7
13+-12--5 = 6
X= -2
6
It is simply -15
-2 + 8 = 6
2√50 + 13√200= 2√[(25)(2)] + 13√[(100)(2)]= 2(√52)(√2) + 13(√102)(√2)= 2(5)√2 + 13(10)√2= 10√2 + 130√2= (10 + 130)√2= 140√2
7+2n