4x+2=34解方程
4x+2(12- x)=34,方程怎样解? -
4x + 2(12 - x) = 34 4x + 2 × 12 - 2 × x = 34 4x + 24 - 2x = 34 4x - 2x = 34 - 24 2x = 10 x = 10 ÷ 2 x = 10 × 1/2 x = 10/2 ∴x = 5 答：此方程的解为x = 5
4x²=49 （2x）#178; = 7²2x = ±7 x = ±3.5
4x + 2(12 - x) = 34 4x + 2 × 12 - 2 × x = 34 4x + 24 - 2x = 34 4x - 2x = 34 - 24 2x = 10 x = 10 ÷ 2 x = 10 × 1/2 x = 10/2 ∴x = 5 答：此方程的解为x = 5
4x²=49 （2x）#178; = 7²2x = ±7 x = ±3.5
4x²=49 （2x）#178; = 7²2x = ±7 x = ±3.5
0.4X=34 x = 34 ÷ 0.4 x = 34 ÷ 4/10 x = 34 ÷ 2/5 x = 34 × 5/2 x = (17×2)/1 × 5/2 x = 17 × 5 ∴x = 85 答：此方程的解为x = 85
解方程:4x²=25? -
先两边同时除以4，然后开根号希望对你有帮助，
解：解方程，此方程的解为x = 5 4x + 2(12 - x) = 34 4x + 2 × 12 - 2 × x = 34 4x + 24 - 2x = 34 4x - 2x = 34 - 24 2x = 10 x = 10 ÷ 2 x = 10 × 1/2 x = 10/2 ∴x = 5 答：此方程的解为x = 5 后面会介绍。
4x-14=34怎样解方程? -
4x-14=34 解：4x=34+14 ——被减数=差+减数4x=48 x=48÷4 ——一个因数=积÷另一个因数x=12
4x-14=34 4x=34+14 4x=48 x=12
4X=24解方程 -
4X=24 X=24÷4 X=6
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