2x+3y=10
40 + 2n
49+2x
2X + 3
There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).
6
2a2+2a2 = 4a2
15
p+2d
20+2x
2x+15
2x+3
twice a number n is 2n plus 3 is + 3 → twice a number n plus 3 is 2n + 3.