Negative plus a negative is a negative. Ex. -1+-1=-2 Negative times a negative is a positive. -2*-2=4 But a negative [minus] plus a positive [plus] can be minus, zero or plus: For example, -3 + 2 = -1 -3 + 3 = 0 -3 + 4 = +1
3n + 2 + (3n + 3 - 3n + 1) = 3n + 2 + (3n + 3 - 3n + 1) = 3n + 2 + (4) = 3n + 6
3x2 + 2x + 3 + x2 + x + 1 = 4x 2+ 3x + 4
(7-3)^2 plus (7-1)^2 = 16+36
(4x + 1)(2x + 3)
1 (a whole).
1 and (3/4) = 1.751.75 + 1.75 = 3.5 (or three and a half)
3 of anything plus 3 more of the same thing is 6 of them.
4 and 1/4
6
2/4 (reduced to 1/2) + 1/4 = 3/4.
7 1/2 + 6 3/4= 14 1/4
17/12
1 and 3/4ths of an inch by 1 and 3/4ths of an inch
3 5ths+3 fourths=17 20ths
¾ of 1 = ¾ × 1 = ¾ = 3 ÷ 4 = 0.75
19/12