1.6*12=72
2.12/4=3
3.72+3=75
Сумма a+3 и 11 равна (а+3)+11=а+14
60*40*Х=120000. Х=120000/(60*40). Х=50.
1. 1) 63, 2) 45, 3) 4, 4)24
2. 9 . 4 – 3 . 7 =15, 63 : 9 + 64 : 8=15, 100 – 9 . 6 =46, <span>24 + 56 – 8 =72
</span><span>3. 48:6=8 за 1кг
8*9=72 за 9кг
4. 48:Х=6
Х=48:6
Х=8
</span><span>Х : 2 = 9
</span><span>х=18
</span><span>24 – Х = 16
</span><span>х=8
</span><span>
</span>
33x=4
X=4/33
2+4x=? 19x+36=37x 19x-37x=-36 -18x=-36 x=2
2+4x=0
4x=2
x=2/4
x=1/2