Question

problema 7...Va rog....multumesc! !

Answer 1

$a+b+c=136 \\ a=5+b/4 \\ (a+b)-c=4 \\ \\ a+b=4+c \\ 4+c+c=136 \\ 4+2c=136 \\ 2c=136-4 \\ 2c=132 \\ c=132/2 \\ c=66 \\ \\ a=5+b/4 \\ 4a=20+b \\ b=4a-20 \\ a+b=4+c \\ a+b=66+4 \\ a+b=70 \\ \\ a+4a-20=70 \\ a+20=70 \\ a=50 \\ \\ b=70-a \\ b=70-50 \\ b=20 \\ \\ a=50 \\ b=20 \\ c=66 \\ \\ 50+20+66=70+66=136$