Simplify the following (d) `7(6-{5+{2-3+5}})`

Simplify the following (5i) xx 7

Simplify the following : 7/12+8/9-5/6

Simplify the following : (i) 11-[7-{5-3(9-3-6)}] (ii) 16-[5-2+{7 of 2-(6div3xx2-1+3)}] .

Simplify the following : (i) (-7)+(-6)div2-{(-5)xx(-4)-(3-5)} (ii) 121div{17-{15-3(8-5)}] .

Simplify each of the following: 1). 63 3{-2- 8-3}-:[3{5+(-2)(-1)}] 2). [29-(-2){6-(7-3)}]-:[3xx{5+(-3)xx(-2)}]

Simplify the following : 2x^(2) + 3y^(2) - 5xy +5x^(2) - y^(2) + 6xy - 3x^(2)

Simplify the following : 3/7" of " 5""5/6

Simplify the following : 15-6div2-5xx(-7)

Simplify the following : 1""3/25+7/20-2/5

Simplify the following : (i) 3/4+2/5 " (ii) "3/7-5/28" (iii) "2""1/3+3""5/6 .