7x+3=10
7x=7 {subtract 3 from each side}
x=1 {divide each side by 7}
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The value of x2+7x+10 depends on the value of X. If x=1, then x2+7x+10 = 18 If x=2, then x2+7x+10 = 28 If x=3, then x2+7x+10 = 40 and so forth
x = 4
7x + 16 = 3x + 4 4x = -12 x = -3
2x+3=9x 3=9x-2x 3=7x x=3/7
8x-1 = 7x+2 Add 1 to both sides: 8x = 7x+3 Subtract 7x from both sides: 1x = 3 ie x = 3