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-3x+16y = 28
3(x-3y = 7)
Multiply the bottom equation by 3 then add both equations together in order to eliminate x:
7y = 49
y = 7
Substitute the value of y into the original to find the value of x:
So: x = 28 and y = 7
22+22+28+28=100.
it equals 28
3x + 7 = -4x + 28 implies 7x + 7 = 28
That equals 28
22
it is 28
59
25 + 28 + 29 = 82
58
28 + 42 = 70
19
18 + 10 + 28 + 10 = 66