evaluate the following algebraic expression give the value of the variables
a+2b ; a = -21 and b = 7
4x-2y ; x = 3 and y = 5
12a + 3b ; a = -2 and b = 11
tysm
a+2b ; a = -21 and b = 7
4x-2y ; x = 3 and y = 5
12a + 3b ; a = -2 and b = 11
tysm
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⇛Evaluate the following algebraic expression give the value of the variables