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Simplifying x + (x + 4) + (x + 7) = 74 Reorder the terms: x + (4 + x) + (x + 7) = 74 Remove parenthesis around (4 + x) x + 4 + x + (x + 7) = 74 Reorder the terms: x + 4 + x + (7 + x) = 74 Remove parenthesis around (7 + x) x + 4 + x + 7 + x = 74 Reorder the terms: 4 + 7 + x + x + x = 74 Combine like terms: 4 + 7 = 11 11 + x + x + x = 74 Combine like terms: x + x = 2x 11 + 2x + x = 74 Combine like terms: 2x + x = 3x 11 + 3x = 74 Solving 11 + 3x = 74 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + 3x = 74 + -11 Combine like terms: 11 + -11 = 0 0 + 3x = 74 + -11 3x = 74 + -11 Combine like terms: 74 + -11 = 63 3x = 63 Divide each side by '3'. x = 21 Simplifying x = 21
| N^2-17n+72= | | 1/4*3/20 | | 327x-4/x+5 | | 2/1*3/4 | | 2x+4x+2x+7x=74 | | 7/10*3/70 | | 40/1*9/10 | | 5/7*4/35 | | 4/10*3/40 | | -3y-10=6y+44 | | 55/1*3/5 | | 18/12*952/1*14/24 | | 6y-16y=-57-73 | | 172/1*3/7 | | 5/1*6/5 | | 36/45*952/1*35/32 | | 13xy= | | 30+2y-6=10y-11-3y | | 5/6*54/1 | | E=1500+0.1h | | 7y^2+1=8y | | 2/1*23/4 | | 2.4+0.3x=0.4(x-1) | | 15/20*1368/1*32/27 | | 42/21*585/1*15/54 | | 6(4x+1)= | | 3/8*48/1 | | 121m^2-264m+144= | | 186/1*2/5 | | 88/1*7/8 | | 36m^2-84m+49= | | 14/1*4/7 |