Toán Lớp 6: tìm x:
a.x-9=-29
b. 98-(64-x)=54
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Toán Lớp 6: tìm x:
a.x-9=-29
b. 98-(64-x)=54
Comments ( 2 )
a ) x – 9 = -29
=> x = (-29) + 9
=> x = -20
Vậy x = -20
b ) 98 – ( 64 – x ) = 54
=> 64 – x = 98 – 54
=> 64 – x = 44
=> x = 64 – 44
=> x = 20
Vậy x = 20
#dtkc
$\text{a, x – 9 = -29}$
$\text{ x = -29 + 9}$
$\text{x = -20}$
$\text{Vậy x = -20}$
$\text{b, 98 – (64 – x) = 54}$
$\text{ 64 – x = 98 – 54}$
$\text{ 64 – x = 44}$
$\text{ x = 64 – 44}$
$\text{ x = 20}$
$\text{Vậy x = 20}$