12-3(2+15) = -39
In math problems without punctuation such as brackets, the standard convention in to solve from left to right. Therefore, you would solve the problem 15-3 times 4 plus nine like by three actions. 15-3 equals 12; 12 times 4 equals 48; 48 plus 9 equals 57.
15 plus -3 equals 12 12 divided by -6 equals -2
12 x 15 = 180
12
-12
2x57-99 equal 15
5 plus 25 equals 60. Need to solve for 5 plus 25 equals ?: 2 plus 10 equals 24 is equivalent to 2 × (1 plus 5) equals 2 × (12); and 3 plus 15 equals 36 is equivalent to 3 ×(1 plus 5) equals 3 × (12); thus 5 plus 25 equals ? is equivalent to 5 × (1 plus 5) equals 5 × (12); thus ? = 5 × 12 = 60.
3 + 3 = 6 6 x 3 = 18 18 - 3 = 15 15 + 3 = 18
20 = 400
your expression is this... n+5=3+12 n+5=15 n=10
15