3*(6+а)=45 12- 40: r=4 (30-p): 2=9 7*б-15=6 20: (х: - вопрос №70392193645124043029715620949378860 от sheidpavla 06.04.2021 01:26

Question

Математика: 3*(6+а)=45 12- 40: r=4 (30-p): 2=9 7*б-15=6 20: (х: 9)=4 (9*т+37): 8=8 60б

sheidpavla · Answer

1)3×(6+а)=456+а=45÷36+а=15а=15-6а=93×(6+9)=452)12-40÷r=440÷r=12-440÷r=8r=40÷8r=512-40÷5=43)(30-p)÷2=930-p=9×230-p=18p= 30-18p=12(30-12)÷2=94)7×b-15=67×b=15+67×b=21b=21÷7b=37×3-15=65)20÷(x÷9)=4x÷9=20÷4x÷9=5x=5×920÷(45÷9)=46)(9×т+37)÷8=89×т+37=8×89×т+37=649×т=64-379×т=27т=27÷9т=3(9×3+37)÷8=8...