Question

dau coroana am nevoie de ajutor rapid..

Answer 1

Explicație pas cu pas:

a)2×a+3×b+c=

=2×a+2×b+b+c=

=2×(a+b)+9=

=2×14+9=

=28+9=

=37

b)4×a+9×b+5×c=

=4×a+4×b+5×b+5×c=

=4×(a+b)+5×(b+c)=

=4×14+5×9=

=56+45=

=101

c)a+8×b+7×c=

=a+b+7×b+7×c=

=14+7×(b+c)=

=14+7×9=

=14+63=

=77