Question

a+b=40, b =a x4 aflati a si b . Prin segmente

Answer 1

a+b=40
b=ax4

a ___
b ___ ___ ___ ___

1+4=5 parti egale
40 : 5=8
a=8
b=8x4=32
verificare: 8+32=40

Answer 2

$a+b=40 \\ b=4a \\ a+4a=40 \\ 5a=40 \\ a=\frac{40}{5} \\ \boxed{\bold{a=8}} \\ b=4a=4 \cdot 8 \\ \boxed{\bold{b=32}}$