Задача по математике 5 класс № 568
а) 4x + 4x = 424
8x = 424
x = 424 : 8
x = 53
б) 15у -8у = 714
7y = 714
y = 714 : 7
y = 102
в) 9z + z = 500
10z = 500
z = 500 : 10
z = 50
г) 10k - k = 702
9k = 702
k = 702 : 9
k = 78
д) 4l + 5l + I = 1 200
10l = 1 200
l = 1 200 : 10
l = 120
е) 6t + 3t - t = 6 400
8t = 6 400
t = 6 400 : 8
t = 800
а) 4x + 4x = 424
8x = 424
x = 424 : 8
x = 53
б) 15у -8у = 714
7y = 714
y = 714 : 7
y = 102
в) 9z + z = 500
10z = 500
z = 500 : 10
z = 50
г) 10k - k = 702
9k = 702
k = 702 : 9
k = 78
д) 4l + 5l + I = 1 200
10l = 1 200
l = 1 200 : 10
l = 120
е) 6t + 3t - t = 6 400
8t = 6 400
t = 6 400 : 8
t = 800
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