7x-3=39
7x=42
x=6
42
7
8x+39 = 2x-15 6x = -54 x = -9
24
x + 7y = 39 So x = 39 - 7y Substitute for x in the second equation: 3(39 - 7y) - 2y = 2 117 - 21y - 2y = 2 115 = 23y y = 5 Substitute this value for y back into the first equation: x + 7*5 = 39 x + 35 = 39 x = 4
58
How do you solve 4y plus x equals 8
From first equation: x = 39 - 7ySubstitute this in second equation: 3(39 - 7y) - 2y = 2ie 117 - 21y - 2y = 2ie 115 = 23yie y = 5, making x = 4.
One number that multiplied by another equals 21 is 3, since 3 x 7 = 21.
1 x 39, 3 x 13, 13 x 3, 39 x 1
13/39 = x
X +13 equals 22, X equals nine