Question

va rog ajutatima dau coroana!Exercitiul 21 multumesc!!

Answer 1

a + b + c = 276 + 8 * 7
      b + c = 500 - (9 * 8 + 238)
      a + c = 9 * (5 + 3) + (26 - 19) * 8 + 100

a + b + c = 276 + 8 * 7 => a + b + c = 276 + 56 => a + b + c = 332
      b + c = 500 - (9 * 8 + 238) => b + c = 500 - (72 + 238) => b + c = 500 - 310 => b + c = 190
a + c = 9 * 8 + 7 * 8 + 100 => a + c = 72 + 56 + 100 => a + c = 228

a + b + c = 332
      b + c = 190
=>  a + 190 = 332  =>  a = 332 - 190 =>  a = 142

a + b + c = 332
      a + c = 228
 => b + 228 = 332  =>  b = 332 - 228  => b = 104

b + c = 190
      b = 104
=>  104 + c = 190  =>  c = 190 - 104  =>  c = 86

a = 142, b = 104, c = 86

Answer 2

a+b+c=276+56=332
b+c=500-(72+238)=500-310=190
a+c=9×8+7×8+100=72+56+100=128+100=228
332 (a+b+c)-190 (b+c)=142(a)
228 (a+c)-142 (a)=86(c)
190 (b+c)-86 (c)=104(b)
s0er ca te-am ajutat:)