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Simplifying 5(2a + 3) + -7 = 2(a + -1a) Reorder the terms: 5(3 + 2a) + -7 = 2(a + -1a) (3 * 5 + 2a * 5) + -7 = 2(a + -1a) (15 + 10a) + -7 = 2(a + -1a) Reorder the terms: 15 + -7 + 10a = 2(a + -1a) Combine like terms: 15 + -7 = 8 8 + 10a = 2(a + -1a) Combine like terms: a + -1a = 0 8 + 10a = 2(0) Multiply 2 * 0 8 + 10a = 0 Anything times zero is zero. 8 + 10a = 0 Solving 8 + 10a = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 10a = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 10a = 0 + -8 10a = 0 + -8 Combine like terms: 0 + -8 = -8 10a = -8 Divide each side by '10'. a = -0.8 Simplifying a = -0.8
| ln(x+2)=ln(5)+ln(x) | | 1846.32=2*153.86+L | | 5x+10=3x-36 | | 3-2b-5b=3 | | -42.7=6.1y | | .3x=1500 | | -2.7=z+3.7 | | 32+2k=8+2(8-3k) | | 13x+y=13 | | h+2.8=5.3 | | -5=-4.9+n | | .7x=1500 | | -6.5r=78 | | -6.5r=75 | | -21=4.2b | | 10=5.1+a | | 3.6c=28.8 | | 5x+11y=9 | | 5x+3-13=19 | | -6.8=r+3.4 | | x(9x-9)=(9x+3)(x-1) | | 4(y-6)=2y-38 | | -5.6n=-22.4 | | 12x+18y=3 | | -9=6.5+b | | 44xn=2 | | 14x-14y=14 | | 8=5.2+s | | 38=3.8c | | -5.6k=67.2 | | -6(2-k)+3k-(4+7k)=2 | | x-4.9=-2.7 |