Coucou tout le monde aidez moi svpppp
​

Coucou
3(x+8) = 3x+24
15(3+y) = 45+15y
20(5-y) = 100-20y
x(x+1) = x²+x
a(12+a) = 12a+a²
25(25+y) = 625+25y
3Ă—p+4 = 3p+4
7+4y = 7+4y
2×π×R = 2πR
3Ă—6Ă—aĂ—b = 18ab
3Ă—aĂ—6Ă—aĂ—a = 18aÂł