Question

228÷×=12
2у=84
36:(×-2)=24
×÷4-3=6
7(×-5)=63
14(3×-15)=252

Answer 1

Ответ:

$228 \div x = 12 \\ x = 228 \div 12 \\ x = 19$

$2y = 84 \\ y = 84 \div 2 \\ y = 42$

$36 \div (x - 2) = 24 \\ x - 2 = 36 \div 24 \\ x - 2 = 1.5 \\ x = 1.5 + 2 \\ x = 3.5$

$x \div 4 - 3 = 6 \\ x \div 4 = 3 + 6 \\ x \div 4 = 9 \\ x = 9 \times 4 \\ x = 36$

$7(x - 5) = 63 \\ 7x - 35 = 63 \\ 7x = 63 + 35 \\ 7x = 98 \\ x = 14$

$14(3x - 15) = 252 \\ 42x - 210 = 252 \\ 42x = 252 + 210 \\ 42x = 462 \\ x = 11$

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