a) 4,25 x ( 58,47 + 41,53 ) - 125 = A
4,25 x 100 - 125 = A
425 - 125 = A
300 = A
b) 4,25 x ( a + 41,53 ) - 125 = 53,5
4,25 x ( a + 41,53 ) = 53,5 + 125
4,25 x ( a + 41,53 ) = 178,5
a + 41,53 = 178,5 : 4,25
a + 41,53 = 42
a = 42 - 41,53
a = 0,47
Mình làm trước nên **** cho mình nha !
a) 4,25 x ( 58,47 + 41,53 ) - 125 = A
4,25 x 100 - 125 = A
425 - 125 = A
300 = A
b) 4,25 x ( a + 41,53 ) - 125 = 53,5
4,25 x ( a + 41,53 ) = 53,5 + 125
4,25 x ( a + 41,53 ) = 178,5
a + 41,53 = 178,5 : 4,25
a + 41,53 = 42
a = 42 - 41,53
a = 0,47
Chúc bạn học tốt !!!
\(a\), \(4,25x\left(58,47+41,53\right)\)\(-125\) = \(A\)
\(4,25\)x \(100\) \(-125\) = \(A\)
\(425\) \(-125\) = \(A\)
\(300\) = \(A\)
\(b\), \(4,25x\left(a+41,53\right)\) \(-125\) = \(53,5\)
\(4,25x\left(a+41,53\right)\) = \(53,5+125\)
\(42,5x\left(a+41,53\right)\) = \(178,5\)
\(a+41,53\) = \(178,5:42,5\)
\(a+41,53\) = \(42\)
\(a\) = \(42-41,53\)
\(a\) = \(0,47\)