Question

a plus 8 egal 4ori b egal 81 - c egal 12 ,afla suma numerelor a,b,c

Answer 1

a+8 = 4*b = 81-c = 12
a+b+c = ?
a = 4*b - 8
c= -4b + 81
4b = 12 => b = 3
a + b +c = (4b - 8) + b + ( -4b + 81) = ( 4*3 - 8) + 3 + ( -4 * 3 + 81) = 
= (12 - 8) + 3 + (-12 + 81) = 4 + 3 + 69 = 76
a + b + c = 76