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*\ EXERCISE 11.3, , , , , , Make up as many expressions with numbers (no variables) as you can from three, aumbers 5, 7 and 8. Every number should be used not more than once. Use only, addition, subtraction and multiplication., , , , , Which out of the following are expressions with numbers only?, , , , (a) y+3 (b) (7x 20)-8z, () 521-7) +7x2 (d) 5, () 3x () 5—S5n, , , , 9) (7x 20) -(5 x 10)—45 +p, Wdentify the operations (addition, subtraction, division, multiplication) in forming the, following expressions and tell how the expressions have been formed., , @ z#l,z—I,y +17, y—17 (b) I7y, oo yO, , 17°, (c) 2y+17,2y—17 (d) 7m,-7m+3,-7m-3, Give expressions for the following cases., (3) Tadded to p (b) 7 subtracted from p, (©) pmultiplied by 7 (d)_ pdivided by7, ) Tsubtracted from —m (f) —p multiplied by 5, , '® -pdivided by 5 (h) pmultiplied by —5