45
Wiki User
∙ 14y ago-8a + 6a + 7 = 1 -2a = 1 - 7 -2a = -6 a = 6/2 a = 3 Check: -8(3) + 6(3) + 7 = 1 -24 + 18 + 7 = 1 1 = 1
a + 6a - 9 = 30 7a - 9 = 30 7a = 30 + 9 7a = 39 a = 39/7 a = 5.571 (to 3 decimal places only).
If you mean: 6a+7 = 5a then the value of a is -7
Oh, come on! 6a - 5a = a, 7 - 5 = 2
89
6a-3=8a+11 -3-11=8a-6a -14=2a a=-7
5a+5=6a-7
-8a + 6a + 7 = 1 -2a = 1 - 7 -2a = -6 a = 6/2 a = 3 Check: -8(3) + 6(3) + 7 = 1 -24 + 18 + 7 = 1 1 = 1
a + 6a - 9 = 30 7a - 9 = 30 7a = 30 + 9 7a = 39 a = 39/7 a = 5.571 (to 3 decimal places only).
6a + 9 = ? a = 7 just replace a with 7 6(7) + 9 order of operations; multiply first 42 + 9 = 51
If you mean: 6a+7 = 5a then the value of a is -7
Oh, come on! 6a - 5a = a, 7 - 5 = 2
89
4 plus 3 equals 7
96
false. because 5plus 3 plus 7 equals, 15, and 15 plus three is not seven
Combine like terms, adding/subtracting the coefficients: (5a² + 6a + 2) + (7a² - 7a + 5) = (5+7)a² + (6-7)a + (2+5) = 12a² - a + 7 (5a² + 6a + 2) - (7a² - 7a + 5) = (5a² + 6a + 2) + (-7a² + 7a - 5) = (5-7)a² + (6+7)a + (2-5) = -2a² + 13a - 3