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Find the value of 3a when a= -4
3a = 3*(-4) = -12
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Find the value of 20x when x= 10
20x = 20*10 = 200
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Evaluate a-13 when a=33
a - 14 = 33 - 13 = 20
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Evaluate 2+3y when y =8
2 + 3y = 2 + 3 * 8 = 2 + 24 = 26
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Find the value of 11(a+b)when a = 7 and b=3
11( a + b) = 11(7 + 3 ) = 11 * 10 = 110
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Evaluate 3x+2y-2z when x =5, y=2 ans z =1
3x+2y-2z = 3 * 5 + 2* 2 -2 * 1 = 15 + 4 - 2 = 17
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Evaluate 5x-2y+4z when x =3,y = 2 and z =4
5x-2y+4z = 5*3 - 2*2 + 4*4 = 15 - 4 + 44 = 55
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Evaluate 6a + 4b-3c when a =4,b=7 and c = -2
6a + 4b-3c = 6* 4 + 4*7 -3*(-2) = 24 + 28 + 6 = 58
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Evaluate 3x +5y when x = 11 and y =4
3x +5y = 3* 11 + 5* 4 = 33 + 20 = 53
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evaluate 8x-4y when x =2 and y = 3
8x-4y = 8*2 - 4* 3 = 16 - 12 = 4
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Simplify 3-10+9.7
3 - 10 + 9.7 = -7 + 9.7 = 2.7
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Simplify 16-10 divide 5+13
=
=
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Simplify 2+3.10 divide 5.3-9
=
= -1.378
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Hope you found the explanation useful.
Regards.
Praseena.
